Publications

Displaying 201 - 300 of 676
  • Ghatan, P. H., Hsieh, J. C., Petersson, K. M., Stone-Elander, S., & Ingvar, M. (1998). Coexistence of attention-based facilitation and inhibition in the human cortex. NeuroImage, 7, 23-29.

    Abstract

    A key function of attention is to select an appropriate subset of available information by facilitation of attended processes and/or inhibition of irrelevant processing. Functional imaging studies, using positron emission tomography, have during different experimental tasks revealed decreased neuronal activity in areas that process input from unattended sensory modalities. It has been hypothesized that these decreases reflect a selective inhibitory modulation of nonrelevant cortical processing. In this study we addressed this question using a continuous arithmetical task with and without concomitant disturbing auditory input (task-irrelevant speech). During the arithmetical task, irrelevant speech did not affect task-performance but yielded decreased activity in the auditory and midcingulate cortices and increased activity in the left posterior parietal cortex. This pattern of modulation is consistent with a top down inhibitory modulation of a nonattended input to the auditory cortex and a coexisting, attention-based facilitation of taskrelevant processing in higher order cortices. These findings suggest that task-related decreases in cortical activity may be of functional importance in the understanding of both attentional mechanisms and taskrelated information processing.
  • Gisselgard, J., Uddén, J., Ingvar, M., & Petersson, K. M. (2007). Disruption of order information by irrelevant items: A serial recognition paradigm. Acta Psychologica, 124(3), 356-369. doi:10.1016/j.actpsy.2006.04.002.

    Abstract

    Irrelevant speech effect (ISE) is defined as a decrement in visually presented digit-list short-term memory performance due to exposure to irrelevant auditory material. Perhaps the most successful theoretical explanation of the effect is the changing state hypothesis. This hypothesis explains the effect in terms of confusion between amodal serial order cues, and represents a view based on the interference caused by the processing of similar order information of the visual and auditory materials. An alternative view suggests that the interference occurs as a consequence of the similarity between the visual and auditory contents of the stimuli. An important argument for the former view is the observation that ISE is almost exclusively observed in tasks that require memory for serial order. However, most short-term memory tasks require that both item and order information be retained in memory. An ideal task to investigate the sensitivity of maintenance of serial order to irrelevant speech would be one that calls upon order information but not item information. One task that is particularly suited to address this issue is serial recognition. In a typical serial recognition task, a list of items is presented and then probed by the same list in which the order of two adjacent items has been transposed. Due to the re-presentation of the encoding string, serial recognition requires primarily the serial order to be maintained while the content of the presented items is deemphasized. In demonstrating a highly significant ISE of changing versus steady-state auditory items in a serial recognition task, the present finding lends support for and extends previous empirical findings suggesting that irrelevant speech has the potential to interfere with the coding of the order of the items to be memorized.
  • Gisselgard, J., Petersson, K. M., & Ingvar, M. (2004). The irrelevant speech effect and working memory load. NeuroImage, 22, 1107-1116. doi:10.1016/j.neuroimage.2004.02.031.

    Abstract

    Irrelevant speech impairs the immediate serial recall of visually presented material. Previously, we have shown that the irrelevant speech effect (ISE) was associated with a relative decrease of regional blood flow in cortical regions subserving the verbal working memory, in particular the superior temporal cortex. In this extension of the previous study, the working memory load was increased and an increased activity as a response to irrelevant speech was noted in the dorsolateral prefrontal cortex. We suggest that the two studies together provide some basic insights as to the nature of the irrelevant speech effect. Firstly, no area in the brain can be ascribed as the single locus of the irrelevant speech effect. Instead, the functional neuroanatomical substrate to the effect can be characterized in terms of changes in networks of functionally interrelated areas. Secondly, the areas that are sensitive to the irrelevant speech effect are also generically activated by the verbal working memory task itself. Finally, the impact of irrelevant speech and related brain activity depends on working memory load as indicated by the differences between the present and the previous study. From a brain perspective, the irrelevant speech effect may represent a complex phenomenon that is a composite of several underlying mechanisms, which depending on the working memory load, include top-down inhibition as well as recruitment of compensatory support and control processes. We suggest that, in the low-load condition, a selection process by an inhibitory top-down modulation is sufficient, whereas in the high-load condition, at or above working memory span, auxiliary adaptive cognitive resources are recruited as compensation
  • Glaser, B., Nikolov, I., Chubb, D., Hamshere, M. L., Segurado, R., Moskvina, V., & Holmans, P. (2007). Analyses of single marker and pairwise effects of candidate loci for rheumatoid arthritis using logistic regression and random forests. BMC Proceedings, 1(Suppl 1): 54.

    Abstract

    Using parametric and nonparametric techniques, our study investigated the presence of single locus and pairwise effects between 20 markers of the Genetic Analysis Workshop 15 (GAW15) North American Rheumatoid Arthritis Consortium (NARAC) candidate gene data set (Problem 2), analyzing 463 independent patients and 855 controls. Specifically, our work examined the correspondence between logistic regression (LR) analysis of single-locus and pairwise interaction effects, and random forest (RF) single and joint importance measures. For this comparison, we selected small but stable RFs (500 trees), which showed strong correlations (r~0.98) between their importance measures and those by RFs grown on 5000 trees. Both RF importance measures captured most of the LR single-locus and pairwise interaction effects, while joint importance measures also corresponded to full LR models containing main and interaction effects. We furthermore showed that RF measures were particularly sensitive to data imputation. The most consistent pairwise effect on rheumatoid arthritis was found between two markers within MAP3K7IP2/SUMO4 on 6q25.1, although LR and RFs assigned different significance levels. Within a hypothetical two-stage design, pairwise LR analysis of all markers with significant RF single importance would have reduced the number of possible combinations in our small data set by 61%, whereas joint importance measures would have been less efficient for marker pair reduction. This suggests that RF single importance measures, which are able to detect a wide range of interaction effects and are computationally very efficient, might be exploited as pre-screening tool for larger association studies. Follow-up analysis, such as by LR, is required since RFs do not indicate highrisk genotype combinations.
  • Gonzalez da Silva, C., Petersson, K. M., Faísca, L., Ingvar, M., & Reis, A. (2004). The effects of literacy and education on the quantitative and qualitative aspects of semantic verbal fluency. Journal of Clinical and Experimental Neuropsychology, 26(2), 266-277. doi:10.1076/jcen.26.2.266.28089.

    Abstract

    Semantic verbal fluency tasks are commonly used in neuropsychological assessment. Investigations of the influence of level of literacy have not yielded consistent results in the literature. This prompted us to investigate the ecological relevance of task specifics, in particular, the choice of semantic criteria used. Two groups of literate and illiterate subjects were compared on two verbal fluency tasks using different semantic criteria. The performance on a food criterion (supermarket fluency task), considered more ecologically relevant for the two literacy groups, and an animal criterion (animal fluency task) were compared. The data were analysed using both quantitative and qualitative measures. The quantitative analysis indicated that the two literacy groups performed equally well on the supermarket fluency task. In contrast, results differed significantly during the animal fluency task. The qualitative analyses indicated differences between groups related to the strategies used, especially with respect to the animal fluency task. The overall results suggest that there is not a substantial difference between literate and illiterate subjects related to the fundamental workings of semantic memory. However, there is indication that the content of semantic memory reflects differences in shared cultural background - in other words, formal education –, as indicated by the significant interaction between level of literacy and semantic criterion.
  • Goudbeek, M. (2007). The acquisition of auditory categories. PhD Thesis, Radboud University Nijmegen, Nijmegen.

    Abstract

    This doctoral dissertation investigated the learning of auditory categories by applying insights from child language learning, visual category learning and phonetic categorization by adults. The experiments in chapter 2 concern supervised learning of multidimensional non-speech categories varying in two dimensions: duration and a non speech analogue of formant frequency. In experiment 1, one dimension of variation determined category membership, variation in the other dimension was irrelevant. Listeners quickly learned to categorize according to this distinction. In experiment 2, both dimensions needed to be combined to categorize correctly. Performance was much lower, but most listeners succeeded in this task. However, in a maintenance phase without feedback or distributional information, listeners reverted to a unidimensional solution. In a maintenance phase with distributional information, listeners did use both dimensions correctly, arguing for the importance of distributional information in (auditory) category acquisition. In chapter 3, the listeners had to classify the same categories, but without feedback. In experiment 1, listeners succeeded to discover the relevant dimension of variation (and ignore the irrelevant one) without feedback. Much of this learning was lost in the maintenance phase, especially for the dimension formant frequency. With two relevant dimensions (Experiment 2), listeners were not able to learn to use both dimensions and reverted to a unidimensional solution. Chapter 4 applied the paradigms of chapter 2 and 3 to the learning of speech categories. Spanish native listeners learned Dutch vowel contrast with one relevant dimension of variation. With feedback, learning was swift, although was not well maintained without feedback or distributional information. Without feedback, Spanish listeners reverted to the dimensions best known in their native phonology, formant frequency, even when distributional information pointed to duration. The results are discussed in chapter 5. The implications for models of speech acquisition are discussed.

    Additional information

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  • Goudbeek, M., Swingley, D., & Kluender, K. R. (2007). The limits of multidimensional category learning. In H. van Hamme, & R. van Son (Eds.), Proceedings of Interspeech 2007 (pp. 2325-2328). Adelaide: Causal Productions.

    Abstract

    Distributional learning is almost certainly involved in the human acquisition of phonetic categories. Because speech is inherently a multidimensional signal, learning phonetic categories entails multidimensional learning. Yet previous studies of auditory category learning have shown poor maintenance of learned multidimensional categories. Two experiments explored ways to improve maintenance: by increasing the costs associated with applying a unidimensional strategy; by providing additional information about the category structures; and by giving explicit instructions on how to categorize. Only with explicit instructions were categorization strategies maintained in a maintenance phase without supervision or distributional information.
  • Grabe, E. (1998). Comparative intonational phonology: English and German. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.2057683.
  • Gretsch, P. (2004). What does finiteness mean to children? A cross-linguistic perspective onroot infinitives. Linguistics, 42(2), 419-468. doi:10.1515/ling.2004.014.

    Abstract

    The discussion on root infinitives has mainly centered around their supposed modal usage. This article aims at modelling the form-function relation of the root infinitive phenomenon by taking into account the full range of interpretational facets encountered cross-linguistically and interindividually. Following the idea of a subsequent ‘‘cell partitioning’’ in the emergence of form-function correlations, I claim that it is the major fission between [+-finite] which is central to express temporal reference different from the default here&now in tense-oriented languages. In aspectual-oriented languages, a similar opposition is mastered with the marking of early aspectual forms. It is observed that in tense-oriented languages like Dutch and German, the progression of functions associated with the infinitival form proceeds from nonmodal to modal, whereas the reverse progression holds for the Russian infinitive. Based on this crucial observation, a model of acquisition is proposed which allows for a flexible and systematic relationship between morphological forms and their respective interpretational biases dependent on their developmental context. As for early child language, I argue that children entertain only two temporal parameters: one parameter is fixed to the here&now point in time, and a second parameter relates to the time talked about, the topic time; this latter time overlaps the situation time as long as no empirical evidence exists to support the emergence of a proper distinction between tense and aspect.

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  • Guerrero, L., & Van Valin Jr., R. D. (2004). Yaqui and the analysis of primary object languages. International Journal of American Linguistics, 70(3), 290-319. doi:10.1086/425603.

    Abstract

    The central topic of this study is to investigate three- and four-place predicate in Yaqui, which are characterized by having multiple object arguments. As with other Southern Uto-Aztecan languages, it has been said that Yaqui follows the Primary/Secondary Object pattern (Dryer 1986). Actually, Yaqui presents three patterns: verbs like nenka ‘sell’ follow the direct–indirect object pattern, verbs like miika ‘give’ follow the primary object pattern, and verbs like chijakta ‘sprinkle’ follow the locative alternation pattern; the primary object pattern is the exclusive one found with derived verbs. This paper shows that the contrast between direct object and primary object languages is not absolute but rather one of degree, and hence two “object” selection principles are needed to explain this mixed system. The two principles are not limited to Yaqui but are found in other languages as well, including English.
  • Gullberg, M. (2004). [Review of the book Pointing: Where language, culture and cognition meet ed. by Sotaro Kita]. Gesture, 4(2), 235-248. doi:10.1075/gest.4.2.08gul.
  • Gullberg, M. (1998). Gesture as a communication strategy in second language discourse: A study of learners of French and Swedish. Lund: Lund University Press.

    Abstract

    Gestures are often regarded as the most typical compensatory device used by language learners in communicative trouble. Yet gestural solutions to communicative problems have rarely been studied within any theory of second language use. The work pre­sented in this volume aims to account for second language learners’ strategic use of speech-associated gestures by combining a process-oriented framework for communi­cation strategies with a cognitive theory of gesture. Two empirical studies are presented. The production study investigates Swedish lear­ners of French and French learners of Swedish and their use of strategic gestures. The results, which are based on analyses of both individual and group behaviour, contradict popular opinion as well as theoretical assumptions from both fields. Gestures are not primarily used to replace speech, nor are they chiefly mimetic. Instead, learners use gestures with speech, and although they do exploit mimetic gestures to solve lexical problems, they also use more abstract gestures to handle discourse-related difficulties and metalinguistic commentary. The influence of factors such as proficiency, task, culture, and strategic competence on gesture use is discussed, and the oral and gestural strategic modes are compared. In the evaluation study, native speakers’ assessments of learners’ gestures, and the potential effect of gestures on evaluations of proficiency are analysed and discussed in terms of individual communicative style. Compensatory gestures function at multiple communicative levels. This has implica­tions for theories of communication strategies, and an expansion of the existing frameworks is discussed taking both cognitive and interactive aspects into account.
  • Gürcanli, Ö., Nakipoglu Demiralp, M., & Ozyurek, A. (2007). Shared information and argument omission in Turkish. In H. Caunt-Nulton, S. Kulatilake, & I. Woo (Eds.), Proceedings of the 31st Annual Boston University Conference on Language Developement (pp. 267-273). Somerville, Mass: Cascadilla Press.
  • De Haan, E., & Hagoort, P. (2004). Het brein in beeld. In B. Deelman, P. Eling, E. De Haan, & E. Van Zomeren (Eds.), Klinische neuropsychologie (pp. 82-98). Amsterdam: Boom.
  • Hagoort, P. (2007). The memory, unification, and control (MUC) model of language. In T. Sakamoto (Ed.), Communicating skills of intention (pp. 259-291). Tokyo: Hituzi Syobo.
  • Hagoort, P. (2007). The memory, unification, and control (MUC) model of language. In A. S. Meyer, L. Wheeldon, & A. Krott (Eds.), Automaticity and control in language processing (pp. 243-270). Hove: Psychology Press.
  • Hagoort, P. (1998). De electrofysiologie van taal: Wat hersenpotentialen vertellen over het menselijk taalvermogen. Neuropraxis, 2, 223-229.
  • Hagoort, P. (1998). De spreker als sprinter. Psychologie, 17, 48-49.
  • Hagoort, P. (2004). Er is geen behoefte aan trompetten als gordijnen. In H. Procee, H. Meijer, P. Timmerman, & R. Tuinsma (Eds.), Bij die wereld wil ik horen! Zesendertig columns en drie essays over de vorming tot academicus (pp. 78-80). Amsterdam: Boom.
  • Hagoort, P., & Van Berkum, J. J. A. (2007). Beyond the sentence given. Philosophical Transactions of the Royal Society. Series B: Biological Sciences, 362, 801-811.

    Abstract

    A central and influential idea among researchers of language is that our language faculty is organized according to Fregean compositionality, which states that the meaning of an utterance is a function of the meaning of its parts and of the syntactic rules by which these parts are combined. Since the domain of syntactic rules is the sentence, the implication of this idea is that language interpretation takes place in a two-step fashion. First, the meaning of a sentence is computed. In a second step, the sentence meaning is integrated with information from prior discourse, world knowledge, information about the speaker and semantic information from extra-linguistic domains such as co-speech gestures or the visual world. Here, we present results from recordings of event-related brain potentials that are inconsistent with this classical two-step model of language interpretation. Our data support a one-step model in which knowledge about the context and the world, concomitant information from other modalities, and the speaker are brought to bear immediately, by the same fast-acting brain system that combines the meanings of individual words into a message-level representation. Underlying the one-step model is the immediacy assumption, according to which all available information will immediately be used to co-determine the interpretation of the speaker's message. Functional magnetic resonance imaging data that we collected indicate that Broca's area plays an important role in semantic unification. Language comprehension involves the rapid incorporation of information in a 'single unification space', coming from a broader range of cognitive domains than presupposed in the standard two-step model of interpretation.
  • Hagoort, P., Hald, L. A., Bastiaansen, M. C. M., & Petersson, K. M. (2004). Integration of word meaning and world knowledge in language comprehension. Science, 304(5669), 438-441. doi:10.1126/science.1095455.

    Abstract

    Although the sentences that we hear or read have meaning, this does not necessarily mean that they are also true. Relatively little is known about the critical brain structures for, and the relative time course of, establishing the meaning and truth of linguistic expressions. We present electroencephalogram data that show the rapid parallel integration of both semantic and world
    knowledge during the interpretation of a sentence. Data from functional magnetic resonance imaging revealed that the left inferior prefrontal cortex is involved in the integration of both meaning and world knowledge. Finally, oscillatory brain responses indicate that the brain keeps a record of what makes a sentence hard to interpret.
  • Hagoort, P. (2004). Het zwarte gat tussen brein en bewustzijn. In N. Korteweg (Ed.), De oorsprong: Over het ontstaan van het leven en alles eromheen (pp. 107-124). Amsterdam: Boom.
  • Hagoort, P. (1998). Hersenen en taal in onderzoek en praktijk. Neuropraxis, 6, 204-205.
  • Hagoort, P. (1998). The shadows of lexical meaning in patients with semantic impairments. In B. Stemmer, & H. Whitaker (Eds.), Handbook of neurolinguistics (pp. 235-248). New York: Academic Press.
  • Hald, L. A., Steenbeek-Planting, E. G., & Hagoort, P. (2007). The interaction of discourse context and world knowledge in online sentence comprehension: Evidence from the N400. Brain Research, 1146, 210-218. doi:10.1016/j.brainres.2007.02.054.

    Abstract

    In an ERP experiment we investigated how the recruitment and integration of world knowledge information relate to the integration of information within a current discourse context. Participants were presented with short discourse contexts which were followed by a sentence that contained a critical word that was correct or incorrect based on general world knowledge and the supporting discourse context, or was more or less acceptable based on the combination of general world knowledge and the specific local discourse context. Relative to the critical word in the correct world knowledge sentences following a neutral discourse, all other critical words elicited an N400 effect that began at about 300 ms after word onset. However, the magnitude of the N400 effect varied in a way that suggests an interaction between world knowledge and discourse context. The results indicate that both world knowledge and discourse context have an effect on sentence interpretation, but neither overrides the other.
  • Haller, S., Klarhoefer, M., Schwarzbach, J., Radue, E. W., & Indefrey, P. (2007). Spatial and temporal analysis of fMRI data on word and sentence reading. European Journal of Neuroscience, 26(7), 2074-2084. doi:10.1111/j.1460-9568.2007.05816.x.

    Abstract

    Written language comprehension at the word and the sentence level was analysed by the combination of spatial and temporal analysis of functional magnetic resonance imaging (fMRI). Spatial analysis was performed via general linear modelling (GLM). Concerning the temporal analysis, local differences in neurovascular coupling may confound a direct comparison of blood oxygenation level-dependent (BOLD) response estimates between regions. To avoid this problem, we parametrically varied linguistic task demands and compared only task-induced within-region BOLD response differences across areas. We reasoned that, in a hierarchical processing system, increasing task demands at lower processing levels induce delayed onset of higher-level processes in corresponding areas. The flow of activation is thus reflected in the size of task-induced delay increases. We estimated BOLD response delay and duration for each voxel and each participant by fitting a model function to the event-related average BOLD response. The GLM showed increasing activations with increasing linguistic demands dominantly in the left inferior frontal gyrus (IFG) and the left superior temporal gyrus (STG). The combination of spatial and temporal analysis allowed a functional differentiation of IFG subregions involved in written language comprehension. Ventral IFG region (BA 47) and STG subserve earlier processing stages than two dorsal IFG regions (BA 44 and 45). This is in accordance with the assumed early lexical semantic and late syntactic processing of these regions and illustrates the complementary information provided by spatial and temporal fMRI data analysis of the same data set.
  • Hamshere, M. L., Segurado, R., Moskvina, V., Nikolov, I., Glaser, B., & Holmans, P. A. (2007). Large-scale linkage analysis of 1302 affected relative pairs with rheumatoid arthritis. BMC Proceedings, 1 (Suppl 1), S100.

    Abstract

    Rheumatoid arthritis is the most common systematic autoimmune disease and its etiology is believed to have both strong genetic and environmental components. We demonstrate the utility of including genetic and clinical phenotypes as covariates within a linkage analysis framework to search for rheumatoid arthritis susceptibility loci. The raw genotypes of 1302 affected relative pairs were combined from four large family-based samples (North American Rheumatoid Arthritis Consortium, United Kingdom, European Consortium on Rheumatoid Arthritis Families, and Canada). The familiality of the clinical phenotypes was assessed. The affected relative pairs were subjected to autosomal multipoint affected relative-pair linkage analysis. Covariates were included in the linkage analysis to take account of heterogeneity within the sample. Evidence of familiality was observed with age at onset (p <} 0.001) and rheumatoid factor (RF) IgM (p {< 0.001), but not definite erosions (p = 0.21). Genome-wide significant evidence for linkage was observed on chromosome 6. Genome-wide suggestive evidence for linkage was observed on chromosomes 13 and 20 when conditioning on age at onset, chromosome 15 conditional on gender, and chromosome 19 conditional on RF IgM after allowing for multiple testing of covariates.
  • Harbusch, K., & Kempen, G. (2007). Clausal coordinate ellipsis in German: The TIGER treebank as a source of evidence. In J. Nivre, H. J. Kaalep, M. Kadri, & M. Koit (Eds.), Proceedings of the 16th Nordic Conference of Computational Linguistics (NODALIDA 2007) (pp. 81-88). Tartu: University of Tartu.

    Abstract

    Syntactic parsers and generators need highquality grammars of coordination and coordinate ellipsis—structures that occur very frequently but are much less well understood theoretically than many other domains of grammar. Modern grammars of coordinate ellipsis are based nearly exclusively on linguistic judgments (intuitions). The extent to which grammar rules based on this type of empirical evidence generate all and only the structures in text corpora, is unknown. As part of a project on the development of a grammar and a generator for coordinate ellipsis in German, we undertook an extensive exploration of the TIGER treebank—a syntactically annotated corpus of about 50,000 newspaper sentences. We report (1) frequency data for the various patterns of coordinate ellipsis, and (2) several rarely (but regularly) occurring ‘fringe deviations’ from the intuition-based rules for several ellipsis types. This information can help improve parser and generator performance.
  • Harbusch, K., Breugel, C., Koch, U., & Kempen, G. (2007). Interactive sentence combining and paraphrasing in support of integrated writing and grammar instruction: A new application area for natural language sentence generators. In S. Busemann (Ed.), Proceedings of the 11th Euopean Workshop in Natural Language Generation (ENLG07) (pp. 65-68). ACL Anthology.

    Abstract

    The potential of sentence generators as engines in Intelligent Computer-Assisted Language Learning and teaching (ICALL) software has hardly been explored. We sketch the prototype of COMPASS, a system that supports integrated writing and grammar curricula for 10 to 14 year old elementary or secondary schoolers. The system enables first- or second-language teachers to design controlled writing exercises, in particular of the “sentence combining” variety. The system includes facilities for error diagnosis and on-line feedback. Syntactic structures built by students or system can be displayed as easily understood phrase-structure or dependency trees, adapted to the student’s level of grammatical knowledge. The heart of the system is a specially designed generator capable of lexically guided sentence generation, of generating syntactic paraphrases, and displaying syntactic structures visually.
  • Haun, D. B. M. (2007). Cognitive cladistics and the relativity of spatial cognition. PhD Thesis, Radboud University Nijmegen, Nijmegen.

    Abstract

    This thesis elaborates on a methodological approach to reliably infer cognitive preferences in an extinct evolutionary ancestor of modern humans. In attempts to understand cognitive evolution, humans have been compared to capuchin monkeys, tamarins, and chimpanzees to name but a few. But comparisons between humans and one other, maybe even distantly related primate, as interesting as they might be, will not tell us anything about an evolutionary ancestor to humans. To put it bluntly: None of the living primates, not even chimpanzees, are a human ancestor. With that in mind, we can still use a comparative approach to gain information about our evolutionary ancestors, as long as we are careful about whom we compare with whom. If a certain trait exists in all genera of a phylogenetic clade, it was most likely present in their common ancestor. The great apes are such a clade (Pongo, Gorilla, Pan and Homo). It follows that, if members of all great ape genera shared a particular cognitive preference or ability, it is most likely part of the evolutionary inheritance of the clade at least ever since their last common ancestor, and therefore also an evolutionarily old, inherited cognitive default in humans. This thesis contains studies comparing all 4 extant Hominid genera, including humans of 4 different age-groups and 2 different cultures. Results show that all great apes do indeed share some cognitive preferences, which they most likely inherited from an evolutionary ancestor. Additionally, human cognitive preferences can change away from such an inherited predisposition given ontogenetic factors, and are at least in part variably adaptable to cultural circumstance.

    Additional information

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  • Hayano, K. (2004). Kaiwa ni okeru ninshikiteki ken’i no koushou: Shuujoshi yo, ne, odoroki hyouji no bunpu to kinou [Negotiation of Epistemic Authority in Conversation: on the use of final particles yo, ne and surprise markers]. Studies in Pragmatics, 6, 17-28.
  • Hayano, K. (2007). Repetitional agreement and anaphorical agreement: negotiation of affiliation and disaffiliation in Japanese conversation. Master Thesis, University of California, Los Angeles.
  • Herbst, L. E. (2007). German 5-year-olds' intonational marking of information status. In J. Trouvain, & W. J. Barry (Eds.), Proceedings of the 16th International Congress of Phonetic Sciences (ICPhS 2007) (pp. 1557-1560). Dudweiler: Pirrot.

    Abstract

    This paper reports on findings from an elicited production task with German 5-year-old children, investigating their use of intonation to mark information status of discourse referents. In line with findings for adults, new referents were preferably marked by H* and L+H*; textually given referents were mainly deaccented. Accessible referents (whose first mentions were less recent) were mostly accented, and predominantly also realised with H* and L+H*, showing children’s sensitivity to recency of mention. No evidence for the consistent use of a special ‘accessibility accent’ H+L* (as has been proposed for adult German) was found.
  • Holler, J., & Geoffrey, B. (2007). Gesture use in social interaction: how speakers' gestures can reflect listeners' thinking. In L. Mondada (Ed.), On-line Proceedings of the 2nd Conference of the International Society of Gesture Studies, Lyon, France 15-18 June 2005.
  • Holler, J., & Stevens, R. (2007). The effect of common ground on how speakers use gesture and speech to represent size information. Journal of Language and Social Psychology, 26, 4-27.
  • Holler, J. (2004). Semantic and pragmatic aspects of representational gestures: Towards a unified model of communication in talk. PhD Thesis, University of Manchester, Manchester.
  • Holler, J., & Beattie, G. (2004). The interaction of iconic gesture and speech. In A. Cammurri, & G. Volpe (Eds.), Lecture Notes in Computer Science, 5th International Gesture Workshop, Genova, Italy, 2003; Selected Revised Papers (pp. 63-69). Heidelberg: Springer Verlag.
  • Hoogman, M., Weisfelt, M., van de Beek, D., de Gans, J., & Schmand, B. (2007). Cognitive outcome in adults after bacterial meningitis. Journal of Neurology, Neurosurgery & Psychiatry, 78, 1092-1096. doi:10.1136/jnnp.2006.110023.

    Abstract

    Objective: To evaluate cognitive outcome in adult survivors of bacterial meningitis. Methods: Data from three prospective multicentre studies were pooled and reanalysed, involving 155 adults surviving bacterial meningitis (79 after pneumococcal and 76 after meningococcal meningitis) and 72 healthy controls. Results: Cognitive impairment was found in 32% of patients and this proportion was similar for survivors of pneumococcal and meningococcal meningitis. Survivors of pneumococcal meningitis performed worse on memory tasks (p<0.001) and tended to be cognitively slower than survivors of meningococcal meningitis (p = 0.08). We found a diffuse pattern of cognitive impairment in which cognitive speed played the most important role. Cognitive performance was not related to time since meningitis; however, there was a positive association between time since meningitis and self-reported physical impairment (p<0.01). The frequency of cognitive impairment and the numbers of abnormal test results for patients with and without adjunctive dexamethasone were similar. Conclusions: Adult survivors of bacterial meningitis are at risk of cognitive impairment, which consists mainly of cognitive slowness. The loss of cognitive speed is stable over time after bacterial meningitis; however, there is a significant improvement in subjective physical impairment in the years after bacterial meningitis. The use of dexamethasone was not associated with cognitive impairment.
  • Horemans, I., & Schiller, N. O. (2004). Form-priming effects in nonword naming. Brain and Language, 90(1-3), 465-469. doi:10.1016/S0093-934X(03)00457-7.

    Abstract

    Form-priming effects from sublexical (syllabic or segmental) primes in masked priming can be accounted for in two ways. One is the sublexical pre-activation view according to which segments are pre-activated by the prime, and at the time the form-related target is to be produced, retrieval/assembly of those pre-activated segments is faster compared to an unrelated situation. However, it has also been argued that form-priming effects from sublexical primes might be due to lexical pre-activation. When the sublexical prime is presented, it activates all form-related words (i.e., cohorts) in the lexicon, necessarily including the form-related target, which—as a consequence—is produced faster than in the unrelated case. Note, however, that this lexical pre-activation account makes previous pre-lexical activation of segments necessary. This study reports a nonword naming experiment to investigate whether or not sublexical pre-activation is involved in masked form priming with sublexical primes. The results demonstrated a priming effect suggesting a nonlexical effect. However, this does not exclude an additional lexical component in form priming.
  • Hoymann, G. (2004). [Review of the book Botswana: The future of the minority languages ed. by Herman M. Batibo and Birgit Smieja]. Journal of African Languages and Linguistics, 25(2), 171-173. doi:10.1515/jall.2004.25.2.171.
  • Huettig, F., & Altmann, G. T. M. (2004). The online processing of ambiguous and unambiguous words in context: Evidence from head-mounted eye-tracking. In M. Carreiras, & C. Clifton (Eds.), The on-line study of sentence comprehension: Eyetracking, ERP and beyond (pp. 187-207). New York: Psychology Press.
  • Huettig, F., & McQueen, J. M. (2007). The tug of war between phonological, semantic and shape information in language-mediated visual search. Journal of Memory and Language, 57(4), 460-482. doi:10.1016/j.jml.2007.02.001.

    Abstract

    Experiments 1 and 2 examined the time-course of retrieval of phonological, visual-shape and semantic knowledge as Dutch participants listened to sentences and looked at displays of four pictures. Given a sentence with beker, `beaker', for example, the display contained phonological (a beaver, bever), shape (a bobbin, klos), and semantic (a fork, vork) competitors. When the display appeared at sentence onset, fixations to phonological competitors preceded fixations to shape and semantic competitors. When display onset was 200 ms before (e.g.) beker, fixations were directed to shape and then semantic competitors, but not phonological competitors. In Experiments 3 and 4, displays contained the printed names of the previously-pictured entities; only phonological competitors were fixated preferentially. These findings suggest that retrieval of phonological, shape and semantic knowledge in the spoken-word and picture-recognition systems is cascaded, and that visual attention shifts are co-determined by the time-course of retrieval of all three knowledge types and by the nature of the information in the visual environment.
  • Huettig, F., & Altmann, G. T. M. (2007). Visual-shape competition during language-mediated attention is based on lexical input and not modulated by contextual appropriateness. Visual Cognition, 15(8), 985-1018. doi:10.1080/13506280601130875.

    Abstract

    Visual attention can be directed immediately, as a spoken word unfolds, towards conceptually related but nonassociated objects, even if they mismatch on other dimensions that would normally determine which objects in the scene were appropriate referents for the unfolding word (Huettig & Altmann, 2005). Here we demonstrate that the mapping between language and concurrent visual objects can also be mediated by visual-shape relations. On hearing "snake", participants directed overt attention immediately, within a visual display depicting four objects, to a picture of an electric cable, although participants had viewed the visual display with four objects for approximately 5 s before hearing the target word - sufficient time to recognize the objects for what they were. The time spent fixating the cable correlated significantly with ratings of the visual similarity between snakes in general and this particular cable. Importantly, with sentences contextually biased towards the concept snake, participants looked at the snake well before the onset of "snake", but they did not look at the visually similar cable until hearing "snake". Finally, we demonstrate that such activation can, under certain circumstances (e.g., during the processing of dominant meanings of homonyms), constrain the direction of visual attention even when it is clearly contextually inappropriate. We conclude that language-mediated attention can be guided by a visual match between spoken words and visual objects, but that such a match is based on lexical input and may not be modulated by contextual appropriateness.
  • Hunley, K., Dunn, M., Lindström, E., Reesink, G., Terrill, A., Norton, H., Scheinfeldt, L., Friedlaender, F. R., Merriwether, D. A., Koki, G., & Friedlaender, J. S. (2007). Inferring prehistory from genetic, linguistic, and geographic variation. In J. S. Friedlaender (Ed.), Genes, language, & culture history in the Southwest Pacific (pp. 141-154). Oxford: Oxford University Press.

    Abstract

    This chapter investigates the fit of genetic, phenotypic, and linguistic data to two well-known models of population history. The first of these models, termed the population fissions model, emphasizes population splitting, isolation, and independent evolution. It predicts that genetic and linguistic data will be perfectly tree-like. The second model, termed isolation by distance, emphasizes genetic exchange among geographically proximate populations. It predicts a monotonic decline in genetic similarity with increasing geographic distance. While these models are overly simplistic, deviations from them were expected to provide important insights into the population history of northern Island Melanesia. The chapter finds scant support for either model because the prehistory of the region has been so complex. Nonetheless, the genetic and linguistic data are consistent with an early radiation of proto-Papuan speakers into the region followed by a much later migration of Austronesian speaking peoples. While these groups subsequently experienced substantial genetic and cultural exchange, this exchange has been insufficient to erase this history of separate migrations.
  • Huttar, G. L., Essegbey, J., & Ameka, F. K. (2007). Gbe and other West African sources of Suriname creole semantic structures: Implications for creole genesis. Journal of Pidgin and Creole Languages, 22(1), 57-72. doi:10.1075/jpcl.22.1.05hut.

    Abstract

    This paper reports on ongoing research on the role of various kinds of potential substrate languages in the development of the semantic structures of Ndyuka (Eastern Suriname Creole). A set of 100 senses of noun, verb, and other lexemes in Ndyuka were compared with senses of corresponding lexemes in three kinds of languages of the former Slave Coast and Gold Coast areas, and immediately adjoining hinterland: (a) Gbe languages; (b) other Kwa languages, specifically Akan and Ga; (c) non-Kwa Niger-Congo languages. The results of this process provide some evidence for the importance of the Gbe languages in the formation of the Suriname creoles, but also for the importance of other languages, and for the areal nature of some of the collocations studied, rendering specific identification of a single substrate source impossible and inappropriate. These results not only provide information about the role of Gbe and other languages in the formation of Ndyuka, but also give evidence for effects of substrate languages spoken by late arrivals some time after the "founders" of a given creole-speaking society. The conclusions are extrapolated beyond Suriname to creole genesis generally.
  • Indefrey, P., & Cutler, A. (2004). Prelexical and lexical processing in listening. In M. Gazzaniga (Ed.), The cognitive neurosciences III. (pp. 759-774). Cambridge, MA: MIT Press.

    Abstract

    This paper presents a meta-analysis of hemodynamic studies on passive auditory language processing. We assess the overlap of hemodynamic activation areas and activation maxima reported in experiments involving the presentation of sentences, words, pseudowords, or sublexical or non-linguistic auditory stimuli. Areas that have been reliably replicated are identified. The results of the meta-analysis are compared to electrophysiological, magnetencephalic (MEG), and clinical findings. It is concluded that auditory language input is processed in a left posterior frontal and bilateral temporal cortical network. Within this network, no processing leve l is related to a single cortical area. The temporal lobes seem to differ with respect to their involvement in post-lexical processing, in that the left temporal lobe has greater involvement than the right, and also in the degree of anatomical specialization for phonological, lexical, and sentence -level processing, with greater overlap on the right contrasting with a higher degree of differentiation on the left.
  • Indefrey, P., & Levelt, W. J. M. (2004). The spatial and temporal signatures of word production components. Cognition, 92(1-2), 101-144. doi:10.1016/j.cognition.2002.06.001.

    Abstract

    This paper presents the results of a comprehensive meta-analysis of the relevant imaging literature on word production (82 experiments). In addition to the spatial overlap of activated regions, we also analyzed the available data on the time course of activations. The analysis specified regions and time windows of activation for the core processes of word production: lexical selection, phonological code retrieval, syllabification, and phonetic/articulatory preparation. A comparison of the word production results with studies on auditory word/non-word perception and reading showed that the time course of activations in word production is, on the whole, compatible with the temporal constraints that perception processes impose on the production processes they affect in picture/word interference paradigms.
  • Indefrey, P. (1998). De neurale architectuur van taal: Welke hersengebieden zijn betrokken bij het spreken. Neuropraxis, 2(6), 230-237.
  • Indefrey, P. (2007). Brain imaging studies of language production. In G. Gaskell (Ed.), Oxford handbook of psycholinguistics (pp. 547-564). Oxford: Oxford University Press.

    Abstract

    Neurocognitive studies of language production have provided sufficient evidence on both the spatial and the temporal patterns of brain activation to allow tentative and in some cases not so tentative conclusions about function-structure relationships. This chapter reports meta-analysis results that identify reliable activation areas for a range of word, sentence, and narrative production tasks both in the native language and a second language. Based on a theoretically motivated analysis of language production tasks it is possible to specify relationships between brain areas and functional processing components of language production that could not have been derived from the data provided by any single task.
  • Indefrey, P. (2004). Hirnaktivierungen bei syntaktischer Sprachverarbeitung: Eine Meta-Analyse. In H. Müller, & G. Rickheit (Eds.), Neurokognition der Sprache (pp. 31-50). Tübingen: Stauffenburg.
  • Indefrey, P., Hellwig, F. M., Herzog, H., Seitz, R. J., & Hagoort, P. (2004). Neural responses to the production and comprehension of syntax in identical utterances. Brain and Language, 89(2), 312-319. doi:10.1016/S0093-934X(03)00352-3.

    Abstract

    Following up on an earlier positron emission tomography (PET) experiment (Indefrey et al., 2001), we used a scene description paradigm to investigate whether a posterior inferior frontal region subserving syntactic encoding for speaking is also involved in syntactic parsing during listening. In the language production part of the experiment, subjects described visually presented scenes
    using either sentences, sequences of noun phrases, or sequences of syntactically unrelated words. In the language comprehension part of the experiment, subjects were auditorily presented with the same kinds of utterances and judged whether they matched the visual scenes. We were able to replicate the previous finding of a region in caudal Broca s area that is sensitive to the complexity of
    syntactic encoding in language production. In language comprehension, no hemodynamic activation differences due to syntactic complexity were found. Given that correct performance in the judgment task did not require syntactic processing of the auditory stimuli, the results suggest that the degree to which listeners recruit syntactic processing resources in language comprehension may be a function of the syntactic demands of the task or the stimulus material.
  • Indefrey, P., Gruber, O., Brown, C. M., Hagoort, P., Posse, S., & Kleinschmidt, A. (1998). Lexicality and not syllable frequency determine lateralized premotor activation during the pronunciation of word-like stimuli: An fMRI study. NeuroImage, 7, S4.
  • Isaac, A., Zinn, C., Matthezing, H., Van de Meij, H., Schlobach, S., & Wang, S. (2007). The value of usage scenarios for thesaurus alignment in cultural heritage context. In Proceedings of the ISWC 2007 workshop in cultural heritage on the semantic web.

    Abstract

    Thesaurus alignment is important for efficient access to heterogeneous Cultural Heritage data. Current ontology alignment techniques provide solutions, but with limited value in practice, because the requirements from usage scenarios are rarely taken in account. In this paper, we start from particular requirements for book re-indexing and investigate possible ways of developing, deploying and evaluating thesaurus alignment techniques in this context. We then compare different aspects of this scenario with others from a more general perspective.
  • Ischebeck, A., Indefrey, P., Usui, N., Nose, I., Hellwig, F. M., & Taira, M. (2004). Reading in a regular orthography: An fMRI study investigating the role of visual familiarity. Journal of Cognitive Neuroscience, 16(5), 727-741. doi:10.1162/089892904970708.

    Abstract

    In order to separate the cognitive processes associated with phonological encoding and the use of a visual word form lexicon in reading, it is desirable to compare the processing of words presented in a visually familiar form with words in a visually unfamiliar form. Japanese Kana orthography offers this possibility. Two phonologically equivalent but visually dissimilar syllabaries allow the writing of, for example, foreign loanwords in two ways, only one of which is visually familiar. Familiarly written words, unfamiliarly written words, and pseudowords were presented in both Kana syllabaries (yielding six conditions in total) to participants during an fMRI measurement with a silent articulation task (Experiment 1) and a phonological lexical decision task (Experiment 2) using an event-related design. Consistent over two experimental tasks, the three different stimulus types (familiar, unfamiliar, and pseudoword) were found to activate selectively different brain regions previously associated with phonological encoding and word retrieval or meaning. Compatible with the predictions of the dual-route model for reading, pseudowords and visually unfamiliar words, which have to be read using phonological assembly, caused an increase in brain activity in left inferior frontal regions (BA 44/47), as compared to visually familiar words. Visually familiar and unfamiliar words were found to activate a range of areas associated with lexico-semantic processing more strongly than pseudowords, such as the left and right temporo-parietal region (BA 39/40), a region in the left middle/inferior temporal gyrus (BA 20/21), and the posterior cingulate (BA 31).
  • Janse, E., & Klitsch, J. (2004). Auditieve perceptie bij gezonde sprekers en bij sprekers met verworven taalstoornissen. Afasiologie, 26(1), 2-6.
  • Janse, E., Nooteboom, S. G., & Quené, H. (2007). Coping with gradient forms of /t/-deletion and lexical ambiguity in spoken word recognition. Language and Cognitive Processes, 22(2), 161-200. doi:10.1080/01690960500371024.

    Abstract

    This study investigates how listeners cope with gradient forms of deletion of word-final /t/ when recognising words in a phonological context that makes /t/-deletion viable. A corpus study confirmed a high incidence of /t/-deletion in an /st#b/ context in Dutch. A discrimination study showed that differences between released /t/, unreleased /t/ and fully deleted /t/ in this specific /st#b/ context were salient. Two on-line experiments were carried out to investigate whether lexical activation might be affected by this form variation. Even though unreleased and released variants were processed equally fast by listeners, a detailed analysis of the unreleased condition provided evidence for gradient activation. Activating a target ending in /t/ is slowest for the most reduced variant because phonological context has to be taken into account. Importantly, activation for a target with /t/ in the absence of cues for /t/ is reduced if there is a surface-matching lexical competitor.
  • Janse, E., Van der Werff, M., & Quené, H. (2007). Listening to fast speech: Aging and sentence context. In J. Trouvain, & W. J. Barry (Eds.), Proceedings of the 16th International Congress of Phonetic Sciences (ICPhS 2007) (pp. 681-684). Dudweiler: Pirrot.

    Abstract

    In this study we investigated to what extent a meaningful sentence context facilitates spoken word processing in young and older listeners if listening is made taxing by time-compressing the speech. Even though elderly listeners have been shown to benefit more from sentence context in difficult listening conditions than young listeners, time compression of speech may interfere with semantic comprehension, particularly in older listeners because of cognitive slowing. The results of a target detection experiment showed that, unlike young listeners who showed facilitation by context at both rates, elderly listeners showed context facilitation at the intermediate, but not at the fastest rate. This suggests that semantic interpretation lags behind target identification.
  • Janse, E. (2004). Word perception in fast speech: Artificially time-compressed vs. naturally produced fast speech. Speech Communication, 42, 155-173. doi:10.1016/j.specom.2003.07.001.

    Abstract

    Natural fast speech differs from normal-rate speech with respect to its temporal pattern. Previous results showed that word intelligibility of heavily artificially time-compressed speech could not be improved by making its temporal pattern more similar to that of natural fast speech. This might have been due to the extrapolation of timing rules for natural fast speech to rates that are much faster than can be attained by human speakers. The present study investigates whether, at a speech rate that human speakers can attain, artificially time-compressed speech is easier to process if its timing pattern is similar to that of naturally produced fast speech. Our first experiment suggests, however, that word processing speed was slowed down, relative to linear compression. In a second experiment, word processing of artificially time-compressed speech was compared with processing of naturally produced fast speech. Even when naturally produced fast speech is perfectly intelligible, its less careful articulation, combined with the changed timing pattern, slows down processing, relative to linearly time-compressed speech. Furthermore, listeners preferred artificially time-compressed speech over naturally produced fast speech. These results suggest that linearly time-compressed speech has both a temporal and a segmental advantage over natural fast speech.
  • Jansma, B. M., & Schiller, N. O. (2004). Monitoring syllable boundaries during speech production. Brain and Language, 90(1-3), 311-317. doi:10.1016/S0093-934X(03)00443-7.

    Abstract

    This study investigated the encoding of syllable boundary information during speech production in Dutch. Based on Levelt's model of phonological encoding, we hypothesized segments and syllable boundaries to be encoded in an incremental way. In a selfmonitoring experiment, decisions about the syllable affiliation (first or second syllable) of a pre-specified consonant, which was the third phoneme in a word, were required (e.g., ka.No canoe vs. kaN.sel pulpit ; capital letters indicate pivotal consonants, dots mark syllable boundaries). First syllable responses were faster than second syllable responses, indicating the incremental nature of segmental encoding and syllabification during speech production planning. The results of the experiment are discussed in the context of Levelt 's model of phonological encoding.
  • Janssen, D. P., Roelofs, A., & Levelt, W. J. M. (2004). Stem complexity and inflectional encoding in language production. Journal of Psycholinguistic Research, 33(5), 365-381. doi:10.1023/B:JOPR.0000039546.60121.a8.

    Abstract

    Three experiments are reported that examined whether stem complexity plays a role in inflecting polymorphemic words in language production. Experiment 1 showed that preparation effects for words with polymorphemic stems are larger when they are produced among words with constant inflectional structures compared to words with variable inflectional structures and simple stems. This replicates earlier findings for words with monomorphemic stems (Janssen et al., 2002). Experiments 2 and 3 showed that when inflectional structure is held constant, the preparation effects are equally large with simple and compound stems, and with compound and complex adjectival stems. These results indicate that inflectional encoding is blind to the complexity of the stem, which suggests that specific inflectional rather than generic morphological frames guide the generation of inflected forms in speaking words.
  • Janzen, G., & Van Turennout, M. (2004). Selective neural representation of objects relevant for navigation. Nature Neuroscience, 7(6), 673-677. doi:10.1038/nn1257.

    Abstract

    As people find their way through their environment, objects at navigationally relevant locations can serve as crucial landmarks. The parahippocampal gyrus has previously been shown to be involved in object and scene recognition. In the present study, we investigated the neural representation of navigationally relevant locations. Healthy human adults viewed a route through a virtual museum with objects placed at intersections (decision points) or at simple turns (non-decision points). Event-related functional magnetic resonance imaging (fMRI) data were acquired during subsequent recognition of the objects in isolation. Neural activity in the parahippocampal gyrus reflected the navigational relevance of an object's location in the museum. Parahippocampal responses were selectively increased for objects that occurred at decision points, independent of attentional demands. This increase occurred for forgotten as well as remembered objects, showing implicit retrieval of navigational information. The automatic storage of relevant object location in the parahippocampal gyrus provides a part of the neural mechanism underlying successful navigation.
  • Janzen, G., Wagensveld, B., & Van Turennout, M. (2007). Neural representation of navigational relevance is rapidly induced and long lasting. Cerebral Cortex, 17(4), 975-981. doi:10.1093/cercor/bhl008.

    Abstract

    Successful navigation is facilitated by the presence of landmarks. Previous functional magnetic resonance imaging (fMRI) evidence indicated that the human parahippocampal gyrus automatically distinguishes between landmarks placed at navigationally relevant (decision points) and irrelevant locations (nondecision points). This storage of navigational relevance can provide a neural mechanism underlying successful navigation. However, an efficient wayfinding mechanism requires that important spatial information is learned quickly and maintained over time. The present study investigates whether the representation of navigational relevance is modulated by time and practice. Participants learned 2 film sequences through virtual mazes containing objects at decision and at nondecision points. One maze was shown one time, and the other maze was shown 3 times. Twenty-four hours after study, event-related fMRI data were acquired during recognition of the objects. The results showed that activity in the parahippocampal gyrus was increased for objects previously placed at decision points as compared with objects placed at nondecision points. The decision point effect was not modulated by the number of exposures to the mazes and independent of explicit memory functions. These findings suggest a persistent representation of navigationally relevant information, which is stable after only one exposure to an environment. These rapidly induced and long-lasting changes in object representation provide a basis for successful wayfinding.
  • Janzen, G., & Weststeijn, C. G. (2007). Neural representation of object location and route direction: An event-related fMRI study. Brain Research, 1165, 116-125. doi:10.1016/j.brainres.2007.05.074.

    Abstract

    The human brain distinguishes between landmarks placed at navigationally relevant and irrelevant locations. However, to provide a successful wayfinding mechanism not only landmarks but also the routes between them need to be stored. We examined the neural representation of a memory for route direction and a memory for relevant landmarks. Healthy human adults viewed objects along a route through a virtual maze. Event-related functional magnetic resonance imaging (fMRI) data were acquired during a subsequent subliminal priming recognition task. Prime-objects either preceded or succeeded a target-object on a preciously learned route. Our results provide evidence that the parahippocampal gyri distinguish between relevant and irrelevant landmarks whereas the inferior parietal gyrus, the anterior cingulate gyrus as well as the right caudate nucleus are involved in the coding of route direction. These data show that separated memory systems store different spatial information. A memory for navigationally relevant object information and a memory for route direction exist.
  • Janzen, G., & Weststeijn, C. (2004). Neural representation of object location and route direction: An fMRI study. NeuroImage, 22(Supplement 1), e634-e635.
  • Janzen, G., & Van Turennout, M. (2004). Neuronale Markierung navigationsrelevanter Objekte im räumlichen Gedächtnis: Ein fMRT Experiment. In D. Kerzel (Ed.), Beiträge zur 46. Tagung experimentell arbeitender Psychologen (pp. 125-125). Lengerich: Pabst Science Publishers.
  • Jesse, A., & McQueen, J. M. (2007). Prelexical adjustments to speaker idiosyncracies: Are they position-specific? In H. van Hamme, & R. van Son (Eds.), Proceedings of Interspeech 2007 (pp. 1597-1600). Adelaide: Causal Productions.

    Abstract

    Listeners use lexical knowledge to adjust their prelexical representations of speech sounds in response to the idiosyncratic pronunciations of particular speakers. We used an exposure-test paradigm to investigate whether this type of perceptual learning transfers across syllabic positions. No significant learning effect was found in Experiment 1, where exposure sounds were onsets and test sounds were codas. Experiments 2-4 showed that there was no learning even when both exposure and test sounds were onsets. But a trend was found when exposure sounds were codas and test sounds were onsets (Experiment 5). This trend was smaller than the robust effect previously found for the coda-to-coda case. These findings suggest that knowledge about idiosyncratic pronunciations may be position specific: Knowledge about how a speaker produces sounds in one position, if it can be acquired at all, influences perception of sounds in that position more strongly than of sounds in another position.
  • Jesse, A., McQueen, J. M., & Page, M. (2007). The locus of talker-specific effects in spoken-word recognition. In J. Trouvain, & W. J. Barry (Eds.), Proceedings of the 16th International Congress of Phonetic Sciences (ICPhS 2007) (pp. 1921-1924). Dudweiler: Pirrot.

    Abstract

    Words repeated in the same voice are better recognized than when they are repeated in a different voice. Such findings have been taken as evidence for the storage of talker-specific lexical episodes. But results on perceptual learning suggest that talker-specific adjustments concern sublexical representations. This study thus investigates whether voice-specific repetition effects in auditory lexical decision are lexical or sublexical. The same critical set of items in Block 2 were, depending on materials in Block 1, either same-voice or different-voice word repetitions, new words comprising re-orderings of phonemes used in the same voice in Block 1, or new words with previously unused phonemes. Results show a benefit for words repeated by the same talker, and a smaller benefit for words consisting of phonemes repeated by the same talker. Talker-specific information thus appears to influence word recognition at multiple representational levels.
  • Jesse, A., & McQueen, J. M. (2007). Visual lexical stress information in audiovisual spoken-word recognition. In J. Vroomen, M. Swerts, & E. Krahmer (Eds.), Proceedings of the International Conference on Auditory-Visual Speech Processing 2007 (pp. 162-166). Tilburg: University of Tilburg.

    Abstract

    Listeners use suprasegmental auditory lexical stress information to resolve the competition words engage in during spoken-word recognition. The present study investigated whether (a) visual speech provides lexical stress information, and, more importantly, (b) whether this visual lexical stress information is used to resolve lexical competition. Dutch word pairs that differ in the lexical stress realization of their first two syllables, but not segmentally (e.g., 'OCtopus' and 'okTOber'; capitals marking primary stress) served as auditory-only, visual-only, and audiovisual speech primes. These primes either matched (e.g., 'OCto-'), mismatched (e.g., 'okTO-'), or were unrelated to (e.g., 'maCHI-') a subsequent printed target (octopus), which participants had to make a lexical decision to. To the degree that visual speech contains lexical stress information, lexical decisions to printed targets should be modulated through the addition of visual speech. Results show, however, no evidence for a role of visual lexical stress information in audiovisual spoken-word recognition.
  • Joergens, S., Kleiser, R., & Indefrey, P. (2007). Handedness and fMRI-activation patterns in sentence processing. NeuroReport, 18(13), 1339-1343.

    Abstract

    We investigate differences of cerebral activation in 12 right-handed and left-handed participants, respectively, using a sentence-processing task. Functional MRI shows activation of left-frontal and inferior-parietal speech areas (BA 44, BA9, BA 40) in both groups, but a stronger bilateral activation in left-handers. Direct group comparison reveals a stronger activation in right-frontal cortex (BA 47, BA 6) and left cerebellum in left-handers. Laterality indices for the inferior-frontal cortex are less asymmetric in left-handers and are not related to the degree of handedness. Thus, our results show that sentence-processing induced enhanced activation involving a bilateral network in left-handed participants.
  • Johns, T. G., Perera, R. M., Vernes, S. C., Vitali, A. A., Cao, D. X., Cavenee, W. K., Scott, A. M., & Furnari, F. B. (2007). The efficacy of epidermal growth factor receptor-specific antibodies against glioma xenografts is influenced by receptor levels, activation status, and heterodimerization. Clinical Cancer Research, 13, 1911-1925. doi:10.1158/1078-0432.CCR-06-1453.

    Abstract

    Purpose: Factors affecting the efficacy of therapeutic monoclonal antibodies (mAb) directed to the epidermal growth factor receptor (EGFR) remain relatively unknown, especially in glioma. Experimental Design: We examined the efficacy of two EGFR-specific mAbs (mAbs 806 and 528) against U87MG-derived glioma xenografts expressing EGFR variants. Using this approach allowed us to change the form of the EGFR while keeping the genetic background constant. These variants included the de2-7 EGFR (or EGFRvIII), a constitutively active mutation of the EGFR expressed in glioma. Results: The efficacy of the mAbs correlated with EGFR number; however, the most important factor was receptor activation. Whereas U87MG xenografts expressing the de2-7 EGFR responded to therapy, those exhibiting a dead kinase de2-7 EGFR were refractory. A modified de2-7 EGFR that was kinase active but autophosphorylation deficient also responded, suggesting that these mAbs function in de2-7 EGFR–expressing xenografts by blocking transphosphorylation. Because de2-7 EGFR–expressing U87MG xenografts coexpress the wild-type EGFR, efficacy of the mAbs was also tested against NR6 xenografts that expressed the de2-7 EGFR in isolation. Whereas mAb 806 displayed antitumor activity against NR6 xenografts, mAb 528 therapy was ineffective, suggesting that mAb 528 mediates its antitumor activity by disrupting interactions between the de2-7 and wild-type EGFR. Finally, genetic disruption of Src in U87MG xenografts expressing the de2-7 EGFR dramatically enhanced mAb 806 efficacy. Conclusions: The effective use of EGFR-specific antibodies in glioma will depend on identifying tumors with activated EGFR. The combination of EGFR and Src inhibitors may be an effective strategy for the treatment of glioma.
  • Johns, T. G., Perera, R. M., Vitali, A. A., Vernes, S. C., & Scott, A. (2004). Phosphorylation of a glioma-specific mutation of the EGFR [Abstract]. Neuro-Oncology, 6, 317.

    Abstract

    Mutations of the epidermal growth factor receptor (EGFR) gene are found at a relatively high frequency in glioma, with the most common being the de2-7 EGFR (or EGFRvIII). This mutation arises from an in-frame deletion of exons 2-7, which removes 267 amino acids from the extracellular domain of the receptor. Despite being unable to bind ligand, the de2-7 EGFR is constitutively active at a low level. Transfection of human glioma cells with the de2-7 EGFR has little effect in vitro, but when grown as tumor xenografts this mutated receptor imparts a dramatic growth advantage. We mapped the phosphorylation pattern of de2-7 EGFR, both in vivo and in vitro, using a panel of antibodies specific for different phosphorylated tyrosine residues. Phosphorylation of de2-7 EGFR was detected constitutively at all tyrosine sites surveyed in vitro and in vivo, including tyrosine 845, a known target in the wild-type EGFR for src kinase. There was a substantial upregulation of phosphorylation at every yrosine residue of the de2-7 EGFR when cells were grown in vivo compared to the receptor isolated from cells cultured in vitro. Upregulation of phosphorylation at tyrosine 845 could be stimulated in vitro by the addition of specific components of the ECM via an integrindependent mechanism. These observations may partially explain why the growth enhancement mediated by de2-7 EGFR is largely restricted to the in vivo environment
  • Jordan, F. (2007). A comparative phylogenetic approach to Austronesian cultural evolution. PhD Thesis, University College London, London.
  • Jordan, F. (2007). Engaging in chit-chat (and all that). [Review of the book Why we talk: The evolutionary origins of language by Jean-Louis Dessalles]. Journal of Evolutionary Psychology, 5(1-4), 241-244. doi:10.1556/JEP.2007.1014.
  • Jordens, P. (2004). Systematiek en dynamiek bij de verwerving van Finietheid. Toegepaste Taalwetenschap in Artikelen, 71, 9-22.

    Abstract

    In early Dutch learner varieties, there is no evidence of finiteness being a functional category. There is no V2nd: no correlation between inflectional morphology and movement. Initially, learners express the illocutive function of finiteness through the use of illocutive markers, with the non-use of an illocutive marker expressing the default illocutive function of assertion. Illocutive markers are functioning as adjuncts with scope over the predicate. Illocutive markers become re-analysed as functional elements.The driving force is the acquisition of the auxiliary verbs that occur with past participles. It leads to a reanalysis of illocutive markers as two separate elements: an auxiliary verb and a scope adverb. The (modal) auxiliary carries illocutive function. Lexical verb-argument structure (including the external argument) occurs within the domain of the auxiliary verb. The predicate as the focus constituent occurs within the domain of a scope adverb. This reanalysis establishes a position for the external argument within the domain of AUX. The acquisition of AUX causes the acquisition of a (hierarchical) structure with a complement as a constituent which represents an underlying verb-argument structure, a predicate as the domain of elements that are in focus, and an external (specifier) position as a landing site for elements with topic function.
  • Jordens, P. (1998). Defaultformen des Präteritums. Zum Erwerb der Vergangenheitsmorphologie im Niederlänidischen. In H. Wegener (Ed.), Eine zweite Sprache lernen (pp. 61-88). Tübingen, Germany: Verlag Gunter Narr.
  • Jordens, P. (2004). Morphology in Second Language Acquisition. In G. Booij (Ed.), Morphologie: Ein internationales Handbuch zur Flexion und Wortbildung (pp. 1806-1816). Berlin: Walter de Gruyter.
  • Kelly, S. D., & Ozyurek, A. (Eds.). (2007). Gesture, language, and brain [Special Issue]. Brain and Language, 101(3).
  • Kempen, G. (2004). Terug naar Wundt: Pleidooi voor integraal onderzoek van taal, taalkennis en taalgedrag. In Koninklijke Nederlandse Akademie van Wetenschappen (Ed.), Gij letterdames en gij letterheren': Nieuwe mogelijkheden voor taalkundig en letterkundig onderzoek in Nederland. (pp. 174-188). Amsterdam: Koninklijke Nederlandse Akademie van Wetenschappen.
  • Kempen, G. (1975). De taalgebruiker in de mens: Schets van zijn bouw en funktie, toepassingen op moedertaal en vreemde taal verwerving. Forum der Letteren, 16, 132-158.
  • Kempen, G. (1998). Comparing and explaining the trajectories of first and second language acquisition: In search of the right mix of psychological and linguistic factors [Commentory]. Bilingualism: Language and Cognition, 1, 29-30. doi:10.1017/S1366728998000066.

    Abstract

    When you compare the behavior of two different age groups which are trying to master the same sensori-motor or cognitive skill, you are likely to discover varying learning routes: different stages, different intervals between stages, or even different orderings of stages. Such heterogeneous learning trajectories may be caused by at least six different types of factors: (1) Initial state: the kinds and levels of skills the learners have available at the onset of the learning episode. (2) Learning mechanisms: rule-based, inductive, connectionist, parameter setting, and so on. (3) Input and feedback characteristics: learning stimuli, information about success and failure. (4) Information processing mechanisms: capacity limitations, attentional biases, response preferences. (5) Energetic variables: motivation, emotional reactions. (6) Final state: the fine-structure of kinds and levels of subskills at the end of the learning episode. This applies to language acquisition as well. First and second language learners probably differ on all six factors. Nevertheless, the debate between advocates and opponents of the Fundamental Difference Hypothesis concerning L1 and L2 acquisition have looked almost exclusively at the first two factors. Those who believe that L1 learners have access to Universal Grammar whereas L2 learners rely on language processing strategies, postulate different learning mechanisms (UG parameter setting in L1, more general inductive strategies in L2 learning). Pienemann opposes this view and, based on his Processability Theory, argues that L1 and L2 learners start out from different initial states: they come to the grammar learning task with different structural hypotheses (SOV versus SVO as basic word order of German).
  • Kempen, G., & Harbusch, K. (1998). A 'tree adjoining' grammar without adjoining: The case of scrambling in German. In Fourth International Workshop on Tree Adjoining Grammars and Related Frameworks (TAG+4).
  • Kempen, G. (2007). De kunst van het weglaten: Elliptische nevenschikking in een model van de spreker. In F. Moerdijk, A. van Santen, & R. Tempelaars (Eds.), Leven met woorden: Afscheidsbundel voor Piet van Sterkenburg (pp. 397-407). Leiden: Brill.

    Abstract

    This paper is an abridged version (in Dutch) of an in-press article by the same author (Kempen, G. (2008/9). Clausal coordination and coordinate ellipsis in a model of the speaker. To be published in: Linguistics). The two papers present a psycholinguistically inspired approach to the syntax of clause-level coordination and coordinate ellipsis. It departs from the assumption that coordinations are structurally similar to so-called appropriateness repairs Ñ an important type of self-repairs in spontaneous speech. Coordinate structures and appropriateness repairs can both be viewed as ÒupdateÓ con-structions. Updating is defined as a special sentence production mode that efficiently revises or augments existing sentential structure in response to modifications in the speakerÕs communicative intention. This perspective is shown to offer an empirically satisfactory and theoretically parsimonious account of two prominent types of coordinate ellipsis, in particular Forward Conjunction Reduction (FCR) and Gapping (including Long-Distance Gapping and Subgapping). They are analyzed as different manifestations of Òincremental updatingÓ Ñ efficient updating of only part of the existing sentential structure. Based on empirical data from Dutch and German, novel treatments are proposed for both types of clausal coordinate ellipsis. Two other forms of coordinate ellipsis Ñ SGF (ÒSubject Gap in Finite clauses with fronted verbÓ), and Backward Conjunction Reduction (BCR; also known as Right Node Raising or RNR) Ñ are shown to be incompatible with the notion of incremental updating. Alternative theoretical interpretations of these phenomena are proposed. The four types of clausal coordinate ellipsis Ñ SGF, Gapping, FCR and BCR Ñ are argued to originate in four different stages of sentence production: Intending (i.e. preparing the communicative intention), Conceptualization, Grammatical Encoding, and Phonological Encoding, respectively.
  • Kempen, G., & Harbusch, K. (2004). A corpus study into word order variation in German subordinate clauses: Animacy affects linearization independently of grammatical function assignment. In T. Pechmann, & C. Habel (Eds.), Multidisciplinary approaches to language production (pp. 173-181). Berlin: Mouton de Gruyter.
  • Kempen, G., & Harbusch, K. (2004). Generating natural word orders in a semi-free word order language: Treebank-based linearization preferences for German. In A. Gelbukh (Ed.), Computational Linguistics and Intelligent Text Processing (pp. 350-354). Berlin: Springer.

    Abstract

    We outline an algorithm capable of generating varied but natural sounding sequences of argument NPs in subordinate clauses of German, a semi-free word order language. In order to attain the right level of output flexibility, the algorithm considers (1) the relevant lexical properties of the head verb (not only transitivity type but also reflexivity, thematic relations expressed by the NPs, etc.), and (2) the animacy and definiteness values of the arguments, and their length. The relevant statistical data were extracted from the NEGRA–II treebank and from hand-coded features for animacy and definiteness. The algorithm maps the relevant properties onto “primary” versus “secondary” placement options in the generator. The algorithm is restricted in that it does not take into account linear order determinants related to the sentence’s information structure and its discourse context (e.g. contrastiveness). These factors may modulate the above preferences or license “tertiary” linear orders beyond the primary and secondary options considered here.
  • Kempen, G., & Harbusch, K. (2004). How flexible is constituent order in the midfield of German subordinate clauses? A corpus study revealing unexpected rigidity. In S. Kepser, & M. Reis (Eds.), Pre-Proceedings of the International Conference on Linguistic Evidence (pp. 81-85). Tübingen: Niemeyer.
  • Kempen, G. (2004). Interactive visualization of syntactic structure assembly for grammar-intensive first- and second-language instruction. In R. Delmonte, P. Delcloque, & S. Tonelli (Eds.), Proceedings of InSTIL/ICALL2004 Symposium on NLP and speech technologies in advanced language learning systems (pp. 183-186). Venice: University of Venice.
  • Kempen, G., & Harbusch, K. (2004). How flexible is constituent order in the midfield of German subordinate clauses?: A corpus study revealing unexpected rigidity. In Proceedings of the International Conference on Linguistic Evidence (pp. 81-85). Tübingen: University of Tübingen.
  • Kempen, G. (2004). Human grammatical coding: Shared structure formation resources for grammatical encoding and decoding. In Cuny 2004 - The 17th Annual CUNY Conference on Human Sentence Processing. March 25-27, 2004. University of Maryland (pp. 66).
  • Kempen, G. (1998). Sentence parsing. In A. D. Friederici (Ed.), Language comprehension: A biological perspective (pp. 213-228). Berlin: Springer.
  • Kempen, G. (1975). Theoretiseren en experimenteren in de cognitieve psychologie. Gedrag: Tijdschrift voor Psychologie, 6, 341-347.
  • Kemps, R. J. J. K., Ernestus, M., Schreuder, R., & Baayen, R. H. (2004). Processing reduced word forms: The suffix restoration effect. Brain and Language, 90(1-3), 117-127. doi:10.1016/S0093-934X(03)00425-5.

    Abstract

    Listeners cannot recognize highly reduced word forms in isolation, but they can do so when these forms are presented in context (Ernestus, Baayen, & Schreuder, 2002). This suggests that not all possible surface forms of words have equal status in the mental lexicon. The present study shows that the reduced forms are linked to the canonical representations in the mental lexicon, and that these latter representations induce reconstruction processes. Listeners restore suffixes that are partly or completely missing in reduced word forms. A series of phoneme-monitoring experiments reveals the nature of this restoration: the basis for suffix restoration is mainly phonological in nature, but orthography has an influence as well.
  • Kemps, R. J. J. K. (2004). Morphology in auditory lexical processing: Sensitivity to fine phonetic detail and insensitivity to suffix reduction. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.59193.

    Abstract

    This dissertation investigates two seemingly contradictory properties of the speech perception system. On the one hand, listeners are extremely sensitive to the fine phonetic details in the speech signal. These subtle acoustic cues can reduce the temporal ambiguity between words that show initial segmental overlap, and can guide lexical activation. On the other hand, comprehension does not seem to be hampered at all by the drastic reductions that typically occur in casual speech. Complete segments, and sometimes even complete syllables, may be missing, but comprehension is seemingly unaffected. This thesis aims at elucidating how words are represented and accessed in the mental lexicon, by investigating these contradictory phenomena for the domain of morphology

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  • Kennaway, J., Glauert, J., & Zwitserlood, I. (2007). Providing Signed Content on the Internet by Synthesized Animation. ACM Transactions on Computer-Human Interaction (TOCHI), 14(3), 15. doi:10.1145/1279700.1279705.

    Abstract

    Written information is often of limited accessibility to deaf people who use sign language. The eSign project was undertaken as a response to the need for technologies enabling efficient production and distribution over the Internet of sign language content. By using an avatar-independent scripting notation for signing gestures and a client-side web browser plug-in to translate this notation into motion data for an avatar, we achieve highly efficient delivery of signing, while avoiding the inflexibility of video or motion capture. Tests with members of the deaf community have indicated that the method can provide an acceptable quality of signing.
  • Kerkhofs, R., Vonk, W., Schriefers, H., & Chwilla, D. J. (2007). Discourse, syntax, and prosody: The brain reveals an immediate interaction. Journal of Cognitive Neuroscience, 19(9), 1421-1434. doi:10.1162/jocn.2007.19.9.1421.

    Abstract

    Speech is structured into parts by syntactic and prosodic breaks. In locally syntactic ambiguous sentences, the detection of a syntactic break necessarily follows detection of a corresponding prosodic break, making an investigation of the immediate interplay of syntactic and prosodic information impossible when studying sentences in isolation. This problem can be solved, however, by embedding sentences in a discourse context that induces the expectation of either the presence or the absence of a syntactic break right at a prosodic break. Event-related potentials (ERPs) were compared to acoustically identical sentences in these different contexts. We found in two experiments that the closure positive shift, an ERP component known to be elicited by prosodic breaks, was reduced in size when a prosodic break was aligned with a syntactic break. These results establish that the brain matches prosodic information against syntactic information immediately.
  • Khemlani, S., Leslie, S.-J., Glucksberg, S., & Rubio-Fernández, P. (2007). Do ducks lay eggs? How people interpret generic assertions. In D. S. McNamara, & J. G. Trafton (Eds.), Proceedings of the 29th Annual Conference of the Cognitive Science Society (CogSci 2007). Austin, TX: Cognitive Science Society.
  • Kidd, E. (2004). Grammars, parsers, and language acquisition. Journal of Child Language, 31(2), 480-483. doi:10.1017/S0305000904006117.

    Abstract

    Drozd's critique of Crain & Thornton's (C&T) (1998) book Investigations in Universal Grammar (IUG) raises many issues concerning theory and experimental design within generative approaches to language acquisition. I focus here on one of the strongest theoretical claims of the Modularity Matching Model (MMM): continuity of processing. For reasons different to Drozd, I argue that the assumption is tenuous. Furthermore, I argue that the focus of the MMM and the methodological prescriptions contained in IUG are too narrow to capture language acquisition.
  • Kidd, E., & Bavin, E. L. (2007). Lexical and referential influences on on-line spoken language comprehension: A comparison of adults and primary-school-age children. First Language, 27(1), 29-52. doi:10.1177/0142723707067437.

    Abstract

    This paper reports on two studies investigating children's and adults' processing of sentences containing ambiguity of prepositional phrase (PP) attachment. Study 1 used corpus data to investigate whether cues argued to be used by adults to resolve PP-attachment ambiguities are available in child-directed speech. Study 2 was an on-line reaction time study investigating the role of lexical and referential biases in syntactic ambiguity resolution by children and adults. Forty children (mean age 8;4) and 37 adults listened to V-NP-PP sentences containing temporary ambiguity of PP-attachment. The sentences were manipulated for (i) verb semantics, (ii) the definiteness of the object NP, and (iii) PP-attachment site. The children and adults did not differ qualitatively from each other in their resolution of the ambiguity. A verb semantics by attachment interaction suggested that different attachment analyses were pursued depending on the semantics of the verb. There was no influence of the definiteness of the object NP in either children's or adults' parsing preferences. The findings from the on-line task matched up well with the corpus data, thus identifying a role for the input in the development of parsing strategies.
  • Kidd, E., Brandt, S., Lieven, E., & Tomasello, M. (2007). Object relatives made easy: A cross-linguistic comparison of the constraints influencing young children's processing of relative clauses. Language and Cognitive Processes, 22(6), 860-897. doi:10.1080/01690960601155284.

    Abstract

    We present the results from four studies, two corpora and two experimental, which suggest that English- and German-speaking children (3;1–4;9 years) use multiple constraints to process and produce object relative clauses. Our two corpora studies show that children produce object relatives that reflect the distributional and discourse regularities of the input. Specifically, the results show that when children produce object relatives they most often do so with (a) an inanimate head noun, and (b) a pronominal relative clause subject. Our experimental findings show that children use these constraints to process and produce this construction type. Moreover, when children were required to repeat the object relatives they most often use in naturalistic speech, the subject-object asymmetry in processing of relative clauses disappeared. We also report cross-linguistic differences in children's rate of acquisition which reflect properties of the input language. Overall, our results suggest that children are sensitive to the same constraints on relative clause processing as adults.
  • Kircher, T. T. J., Brammer, M. J., Levelt, W. J. M., Bartels, M., & McGuire, P. K. (2004). Pausing for thought: Engagement of left temporal cortex during pauses in speech. NeuroImage, 21(1), 84-90. doi:10.1016/j.neuroimage.2003.09.041.

    Abstract

    Pauses during continuous speech, particularly those that occur within clauses, are thought to reflect the planning of forthcoming verbal output. We used functional Magnetic Resonance Imaging (fMRI) to examine their neural correlates. Six volunteers were scanned while describing seven Rorschach inkblots, producing 3 min of speech per inkblot. In an event-related design, the level of blood oxygenation level dependent (BOLD) contrast during brief speech pauses (mean duration 1.3 s, SD 0.3 s) during overt speech was contrasted with that during intervening periods of articulation. We then examined activity associated with pauses that occurred within clauses and pauses that occurred between grammatical junctions. Relative to articulation during speech, pauses were associated with activation in the banks of the left superior temporal sulcus (BA 39/22), at the temporoparietal junction. Continuous speech was associated with greater activation bilaterally in the inferior frontal (BA 44/45), middle frontal (BA 8) and anterior cingulate (BA 24) gyri, the middle temporal sulcus (BA 21/22), the occipital cortex and the cerebellum. Left temporal activation was evident during pauses that occurred within clauses but not during pauses at grammatical junctions. In summary, articulation during continuous speech involved frontal, temporal and cerebellar areas, while pausing was associated with activity in the left temporal cortex, especially when this occurred within a clause. The latter finding is consistent with evidence that within-clause pauses are a correlate of speech planning and in particular lexical retrieval.
  • Kita, S., Ozyurek, A., Allen, S., Brown, A., Furman, R., & Ishizuka, T. (2007). Relations between syntactic encoding and co-speech gestures: Implications for a model of speech and gesture production. Language and Cognitive Processes, 22(8), 1212-1236. doi:10.1080/01690960701461426.

    Abstract

    Gestures that accompany speech are known to be tightly coupled with speech production. However little is known about the cognitive processes that underlie this link. Previous cross-linguistic research has provided preliminary evidence for online interaction between the two systems based on the systematic co-variation found between how different languages syntactically package Manner and Path information of a motion event and how gestures represent Manner and Path. Here we elaborate on this finding by testing whether speakers within the same language gesturally express Manner and Path differently according to their online choice of syntactic packaging of Manner and Path, or whether gestural expression is pre-determined by a habitual conceptual schema congruent with the linguistic typology. Typologically congruent and incongruent syntactic structures for expressing Manner and Path (i.e., in a single clause or multiple clauses) were elicited from English speakers. We found that gestural expressions were determined by the online choice of syntactic packaging rather than by a habitual conceptual schema. It is therefore concluded that speech and gesture production processes interface online at the conceptual planning phase. Implications of the findings for models of speech and gesture production are discussed

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