Publications

Displaying 1 - 100 of 143
  • Ameka, F. K. (1987). A comparative analysis of linguistic routines in two languages: English and Ewe. Journal of Pragmatics, 11(3), 299-326. doi:10.1016/0378-2166(87)90135-4.

    Abstract

    It is very widely acknowledged that linguistic routines are not only embodiments of the sociocultural values of speech communities that use them, but their knowledge and appropriate use also form an essential part of a speaker's communicative/pragmatic competence. Despite this, many studies concentrate more on describing the use of routines rather than explaining the socio-cultural aspects of their meaning and the way they affect their use. It is the contention of this paper that there is the need to go beyond descriptions to explanations and explications of the use and meaning of routines that are culturally and socially revealing. This view is illustrated by a comparative analysis of functionally equivalent formulaic expressions in English and Ewe. The similarities are noted and the differences explained in terms of the socio-cultural traditions associated with the respective languages. It is argued that insights gained from such studies are valuable for crosscultural understanding and communication as well as for second language pedagogy.
  • Ameka, F. K. (1999). [Review of M. E. Kropp Dakubu: Korle meets the sea: a sociolinguistic history of Accra]. Bulletin of the School of Oriental and African Studies, 62, 198-199. doi:10.1017/S0041977X0001836X.
  • Ameka, F. K. (1999). Interjections. In K. Brown, & J. Miller (Eds.), Concise encyclopedia of grammatical categories (pp. 213-216). Oxford: Elsevier.
  • Ameka, F. K. (1999). Partir c'est mourir un peu: Universal and culture specific features of leave taking. RASK International Journal of Language and Communication, 9/10, 257-283.
  • Ameka, F. K. (1999). Spatial information packaging in Ewe and Likpe: A comparative perspective. Frankfurter Afrikanistische Blätter, 11, 7-34.
  • Ameka, F. K., De Witte, C., & Wilkins, D. (1999). Picture series for positional verbs: Eliciting the verbal component in locative descriptions. In D. Wilkins (Ed.), Manual for the 1999 Field Season (pp. 48-54). Nijmegen: Max Planck Institute for Psycholinguistics. doi:10.17617/2.2573831.

    Abstract

    How do different languages encode location and position meanings? In conjunction with the BowPed picture series and Caused Positions task, this elicitation tool is designed to help researchers (i) identify a language’s resources for encoding topological relations; (ii) delimit the pragmatics of use of such resources; and (iii) determine the semantics of select spatial terms. The task focuses on the exploration of the predicative component of topological expressions (e.g., ‘the cassavas are lying in the basket’), especially the contrastive elicitation of positional verbs. The materials consist of a set of photographs of objects (e.g., bottles, cloths, sticks) in specific configurations with various ground items (e.g., basket, table, tree).

    Additional information

    1999_Positional_verbs_stimuli.zip
  • Ameka, F. K. (1999). The typology and semantics of complex nominal duplication in Ewe. Anthropological Linguistics, 41, 75-106.
  • Bastiaansen, M. C. M., Böcker, K. B. E., Cluitmans, P. J. M., & Brunia, C. H. M. (1999). Event-related desynchronization related to the anticipation of a stimulus providing knowledge of results. Clinical Neurophysiology, 110, 250-260.

    Abstract

    In the present paper, event-related desynchronization (ERD) in the alpha and beta frequency bands is quantified in order to investigate the processes related to the anticipation of a knowledge of results (KR) stimulus. In a time estimation task, 10 subjects were instructed to press a button 4 s after the presentation of an auditory stimulus. Two seconds after the response they received auditory or visual feedback on the timing of their response. Preceding the button press, a centrally maximal ERD is found. Preceding the visual KR stimulus, an ERD is present that has an occipital maximum. Contrary to expectation, preceding the auditory KR stimulus there are no signs of a modalityspecific ERD. Results are related to a thalamo-cortical gating model which predicts a correspondence between negative slow potentials and ERD during motor preparation and stimulus anticipation.
  • Bauer, B. L. M. (1999). Impersonal HABET constructions: At the cross-roads of Indo-European innovation. In E. Polomé, & C. Justus (Eds.), Language change and typological variation. Vol II. Grammatical universals and typology (pp. 590-612). Washington: Institute for the study of man.
  • Bauer, B. L. M. (1987). L’évolution des structures morphologiques et syntaxiques du latin au français. Travaux de linguistique, 14-15, 95-107.
  • Blomert, L., & Hagoort, P. (1987). Neurobiologische en neuropsychologische aspecten van dyslexie. In J. Hamers, & A. Van der Leij (Eds.), Dyslexie 87 (pp. 35-44). Lisse: Swets and Zeitlinger.
  • Böcker, K. B. E., Bastiaansen, M. C. M., Vroomen, J., Brunia, C. H. M., & de Gelder, B. (1999). An ERP correlate of metrical stress in spoken word recognition. Psychophysiology, 36, 706-720. doi:10.1111/1469-8986.3660706.

    Abstract

    Rhythmic properties of spoken language such as metrical stress, that is, the alternation of strong and weak syllables, are important in speech recognition of stress-timed languages such as Dutch and English. Nineteen subjects listened passively to or discriminated actively between sequences of bisyllabic Dutch words, which started with either a weak or a strong syllable. Weak-initial words, which constitute 12% of the Dutch lexicon, evoked more negativity than strong-initial words in the interval between P2 and N400 components of the auditory event-related potential. This negativity was denoted as N325. The N325 was larger during stress discrimination than during passive listening. N325 was also larger when a weak-initial word followed sequence of strong-initial words than when it followed words with the same stress pattern. The latter difference was larger for listeners who performed well on stress discrimination. It was concluded that the N325 is probably a manifestation of the extraction of metrical stress from the acoustic signal and its transformation into task requirements.
  • Bohnemeyer, J. (1999). A questionnaire on event integration. In D. Wilkins (Ed.), Manual for the 1999 Field Season (pp. 87-95). Nijmegen: Max Planck Institute for Psycholinguistics. doi:10.17617/2.3002691.

    Abstract

    How do we decide where events begin and end? Like the ECOM clips, this questionnaire is designed to investigate how a language divides and/or integrates complex scenarios into sub-events and macro-events. The questionnaire focuses on events of motion, caused state change (e.g., breaking), and transfer (e.g., giving). It provides a checklist of scenarios that give insight into where a language “draws the line” in event integration, based on known cross-linguistic differences.
  • Bohnemeyer, J. (1999). Event representation and event complexity: General introduction. In D. Wilkins (Ed.), Manual for the 1999 Field Season (pp. 69-73). Nijmegen: Max Planck Institute for Psycholinguistics. doi:10.17617/2.3002741.

    Abstract

    How do we decide where events begin and end? In some languages it makes sense to say something like Dan broke the plate, but in other languages it is necessary to treat this action as a complex scenario composed of separate stages (Dan dropped the plate and then the plate broke). This document introduces issues concerning the linguistic and cognitive representations of event complexity and integration, and provides an overview of tasks that are relevant to this topic, including the ECOM clips, the Questionnaire on Event integration, and the Questionnaire on motion lexicalisation and motion description.
  • Bohnemeyer, J., & Caelen, M. (1999). The ECOM clips: A stimulus for the linguistic coding of event complexity. In D. Wilkins (Ed.), Manual for the 1999 Field Season (pp. 74-86). Nijmegen: Max Planck Institute for Psycholinguistics. doi:10.17617/2.874627.

    Abstract

    How do we decide where events begin and end? In some languages it makes sense to say something like Dan broke the plate, but in other languages it is necessary to treat this action as a complex scenario composed of separate stages (Dan dropped the plate and then the plate broke). The “Event Complexity” (ECOM) clips are designed to explore how languages differ in dividing and/or integrating complex scenarios into sub-events and macro-events. The stimuli consist of animated clips of geometric shapes that participate in different scenarios (e.g., a circle “hits” a triangle and “breaks” it). Consultants are asked to describe the scenes, and then to comment on possible alternative descriptions.

    Additional information

    1999_The_ECOM_clips.zip
  • Bowerman, M. (1987). Commentary: Mechanisms of language acquisition. In B. MacWhinney (Ed.), Mechanisms of language acquisition (pp. 443-466). Hillsdale, N.J.: Lawrence Erlbaum.
  • Brown, C. M., Hagoort, P., & Ter Keurs, M. (1999). Electrophysiological signatures of visual lexical processing: open en closed-class words. Journal of Cognitive Neuroscience, 11(3), 261-281.

    Abstract

    In this paper presents evidence of the disputed existence of an electrophysiological marker for the lexical-categorical distinction between open- and closed-class words. Event-related brain potentials were recorded from the scalp while subjects read a story. Separate waveforms were computed for open- and closed-class words. Two aspects of the waveforms could be reliably related to vocabulary class. The first was an early negativity in the 230- to 350-msec epoch, with a bilateral anterior predominance. This negativity was elicited by open- and closed-class words alike, was not affected by word frequency or word length, and had an earlier peak latency for closed-class words. The second was a frontal slow negative shift in the 350- to 500-msec epoch, largest over the left side of the scalp. This late negativity was only elicited by closed-class words. Although the early negativity cannot serve as a qualitative marker of the open- and closed-class distinction, it does reflect the earliest electrophysiological manifestation of the availability of categorical information from the mental lexicon. These results suggest that the brain honors the distinction between open- and closed-class words, in relation to the different roles that they play in on-line sentence processing.
  • Brown, P. (1999). Anthropologie cognitive. Anthropologie et Sociétés, 23(3), 91-119.

    Abstract

    In reaction to the dominance of universalism in the 1970s and '80s, there have recently been a number of reappraisals of the relation between language and cognition, and the field of cognitive anthropology is flourishing in several new directions in both America and Europe. This is partly due to a renewal and re-evaluation of approaches to the question of linguistic relativity associated with Whorf, and partly to the inspiration of modern developments in cognitive science. This review briefly sketches the history of cognitive anthropology and surveys current research on both sides of the Atlantic. The focus is on assessing current directions, considering in particular, by way of illustration, recent work in cultural models and on spatial language and cognition. The review concludes with an assessment of how cognitive anthropology could contribute directly both to the broader project of cognitive science and to the anthropological study of how cultural ideas and practices relate to structures and processes of human cognition.
  • Brown, P. (1999). Repetition [Encyclopedia entry for 'Lexicon for the New Millenium', ed. Alessandro Duranti]. Journal of Linguistic Anthropology, 9(2), 223-226. doi:10.1525/jlin.1999.9.1-2.223.

    Abstract

    This is an encyclopedia entry describing conversational and interactional uses of linguistic repetition.
  • Brown, C. M., & Hagoort, P. (1999). The cognitive neuroscience of language: Challenges and future directions. In C. M. Brown, & P. Hagoort (Eds.), The neurocognition of language (pp. 3-14). Oxford: Oxford University Press.
  • Brown, P., & Levinson, S. C. (1999). Politeness: Some universals in language usage [Reprint]. In A. Jaworski, & N. Coupland (Eds.), The discourse reader (pp. 321-335). London: Routledge.

    Abstract

    This article is a reprint of chapter 1, the introduction to Brown and Levinson, 1987, Politeness: Some universals in language usage (Cambridge University Press).
  • Choi, S., McDonough, L., Bowerman, M., & Mandler, J. M. (1999). Early sensitivity to language-specific spatial categories in English and Korean. Cognitive Development, 14, 241-268. doi:10.1016/S0885-2014(99)00004-0.

    Abstract

    This study investigates young children’s comprehension of spatial terms in two languages that categorize space strikingly differently. English makes a distinction between actions resulting in containment (put in) versus support or surface attachment (put on), while Korean makes a cross-cutting distinction between tight-fit relations (kkita) versus loose-fit or other contact relations (various verbs). In particular, the Korean verb kkita refers to actions resulting in a tight-fit relation regardless of containment or support. In a preferential looking study we assessed the comprehension of in by 20 English learners and kkita by 10 Korean learners, all between 18 and 23 months. The children viewed pairs of scenes while listening to sentences with and without the target word. The target word led children to gaze at different and language-appropriate aspects of the scenes. We conclude that children are sensitive to language-specific spatial categories by 18–23 months.
  • Clifton, Jr., C., Cutler, A., McQueen, J. M., & Van Ooijen, B. (1999). The processing of inflected forms. [Commentary on H. Clahsen: Lexical entries and rules of language.]. Behavioral and Brain Sciences, 22, 1018-1019.

    Abstract

    Clashen proposes two distinct processing routes, for regularly and irregularly inflected forms, respectively, and thus is apparently making a psychological claim. We argue his position, which embodies a strictly linguistic perspective, does not constitute a psychological processing model.
  • Connine, C. M., Clifton, Jr., C., & Cutler, A. (1987). Effects of lexical stress on phonetic categorization. Phonetica, 44, 133-146.
  • Cutler, A., Norris, D., & Williams, J. (1987). A note on the role of phonological expectations in speech segmentation. Journal of Memory and Language, 26, 480-487. doi:10.1016/0749-596X(87)90103-3.

    Abstract

    Word-initial CVC syllables are detected faster in words beginning consonant-vowel-consonant-vowel (CVCV-) than in words beginning consonant-vowel-consonant-consonant (CVCC-). This effect was reported independently by M. Taft and G. Hambly (1985, Journal of Memory and Language, 24, 320–335) and by A. Cutler, J. Mehler, D. Norris, and J. Segui (1986, Journal of Memory and Language, 25, 385–400). Taft and Hambly explained the effect in terms of lexical factors. This explanation cannot account for Cutler et al.'s results, in which the effect also appeared with nonwords and foreign words. Cutler et al. suggested that CVCV-sequences might simply be easier to perceive than CVCC-sequences. The present study confirms this suggestion, and explains it as a reflection of listener expectations constructed on the basis of distributional characteristics of the language.
  • Cutler, A., & Clifton, Jr., C. (1999). Comprehending spoken language: A blueprint of the listener. In C. M. Brown, & P. Hagoort (Eds.), The neurocognition of language (pp. 123-166). Oxford University Press.
  • Cutler, A. (1999). Foreword. In Slips of the Ear: Errors in the perception of Casual Conversation (pp. xiii-xv). New York City, NY, USA: Academic Press.
  • Cutler, A., Mehler, J., Norris, D., & Segui, J. (1987). Phoneme identification and the lexicon. Cognitive Psychology, 19, 141-177. doi:10.1016/0010-0285(87)90010-7.
  • Cutler, A. (1999). Prosodische Struktur und Worterkennung bei gesprochener Sprache. In A. D. Friedrici (Ed.), Enzyklopädie der Psychologie: Sprachrezeption (pp. 49-83). Göttingen: Hogrefe.
  • Cutler, A. (1999). Prosody and intonation, processing issues. In R. A. Wilson, & F. C. Keil (Eds.), MIT encyclopedia of the cognitive sciences (pp. 682-683). Cambridge, MA: MIT Press.
  • Cutler, A., & Norris, D. (1999). Sharpening Ockham’s razor (Commentary on W.J.M. Levelt, A. Roelofs & A.S. Meyer: A theory of lexical access in speech production). Behavioral and Brain Sciences, 22, 40-41.

    Abstract

    Language production and comprehension are intimately interrelated; and models of production and comprehension should, we argue, be constrained by common architectural guidelines. Levelt et al.'s target article adopts as guiding principle Ockham's razor: the best model of production is the simplest one. We recommend adoption of the same principle in comprehension, with consequent simplification of some well-known types of models.
  • Cutler, A. (1987). Speaking for listening. In A. Allport, D. MacKay, W. Prinz, & E. Scheerer (Eds.), Language perception and production: Relationships between listening, speaking, reading and writing (pp. 23-40). London: Academic Press.

    Abstract

    Speech production is constrained at all levels by the demands of speech perception. The speaker's primary aim is successful communication, and to this end semantic, syntactic and lexical choices are directed by the needs of the listener. Even at the articulatory level, some aspects of production appear to be perceptually constrained, for example the blocking of phonological distortions under certain conditions. An apparent exception to this pattern is word boundary information, which ought to be extremely useful to listeners, but which is not reliably coded in speech. It is argued that the solution to this apparent problem lies in rethinking the concept of the boundary of the lexical access unit. Speech rhythm provides clear information about the location of stressed syllables, and listeners do make use of this information. If stressed syllables can serve as the determinants of word lexical access codes, then once again speakers are providing precisely the necessary form of speech information to facilitate perception.
  • Cutler, A. (1999). Spoken-word recognition. In R. A. Wilson, & F. C. Keil (Eds.), MIT encyclopedia of the cognitive sciences (pp. 796-798). Cambridge, MA: MIT Press.
  • Cutler, A., & Otake, T. (1999). Pitch accent in spoken-word recognition in Japanese. Journal of the Acoustical Society of America, 105, 1877-1888.

    Abstract

    Three experiments addressed the question of whether pitch-accent information may be exploited in the process of recognizing spoken words in Tokyo Japanese. In a two-choice classification task, listeners judged from which of two words, differing in accentual structure, isolated syllables had been extracted ~e.g., ka from baka HL or gaka LH!; most judgments were correct, and listeners’ decisions were correlated with the fundamental frequency characteristics of the syllables. In a gating experiment, listeners heard initial fragments of words and guessed what the words were; their guesses overwhelmingly had the same initial accent structure as the gated word even when only the beginning CV of the stimulus ~e.g., na- from nagasa HLL or nagashi LHH! was presented. In addition, listeners were more confident in guesses with the same initial accent structure as the stimulus than in guesses with different accent. In a lexical decision experiment, responses to spoken words ~e.g., ame HL! were speeded by previous presentation of the same word ~e.g., ame HL! but not by previous presentation of a word differing only in accent ~e.g., ame LH!. Together these findings provide strong evidence that accentual information constrains the activation and selection of candidates for spoken-word recognition.
  • Cutler, A., Butterfield, S., & Williams, J. (1987). The perceptual integrity of syllabic onsets. Journal of Memory and Language, 26, 406-418. doi:10.1016/0749-596X(87)90099-4.
  • Cutler, A., & Carter, D. (1987). The predominance of strong initial syllables in the English vocabulary. Computer Speech and Language, 2, 133-142. doi:10.1016/0885-2308(87)90004-0.

    Abstract

    Studies of human speech processing have provided evidence for a segmentation strategy in the perception of continuous speech, whereby a word boundary is postulated, and a lexical access procedure initiated, at each metrically strong syllable. The likely success of this strategy was here estimated against the characteristics of the English vocabulary. Two computerized dictionaries were found to list approximately three times as many words beginning with strong syllables (i.e. syllables containing a full vowel) as beginning with weak syllables (i.e. syllables containing a reduced vowel). Consideration of frequency of lexical word occurrence reveals that words beginning with strong syllables occur on average more often than words beginning with weak syllables. Together, these findings motivate an estimate for everyday speech recognition that approximately 85% of lexical words (i.e. excluding function words) will begin with strong syllables. This estimate was tested against a corpus of 190 000 words of spontaneous British English conversion. In this corpus, 90% of lexical words were found to begin with strong syllables. This suggests that a strategy of postulating word boundaries at the onset of strong syllables would have a high success rate in that few actual lexical word onsets would be missed.
  • Cutler, A. (1987). The task of the speaker and the task of the hearer [Commentary/Sperber & Wilson: Relevance]. Behavioral and Brain Sciences, 10, 715-716.
  • Edlinger, G., Bastiaansen, M. C. M., Brunia, C., Neuper, C., & Pfurtscheller, G. (1999). Cortical oscillatory activity assessed by combined EEG and MEG recordings and high resolution ERD methods. Biomedizinische Technik, 44(2), 131-134.
  • Eibl-Eibesfeldt, I., Senft, B., & Senft, G. (1987). Trobriander (Ost-Neuguinea, Trobriand Inseln, Kaile'una) Fadenspiele 'ninikula'. Publikation zu Wissenschaftlichen Filmen, Sektion Ethnologie, 25, 1-15.
  • Eisenbeiss, S., McGregor, B., & Schmidt, C. M. (1999). Story book stimulus for the elicitation of external possessor constructions and dative constructions ('the circle of dirt'). In D. Wilkins (Ed.), Manual for the 1999 Field Season (pp. 140-144). Nijmegen: Max Planck Institute for Psycholinguistics. doi:10.17617/2.3002750.

    Abstract

    How involved in an event is a person that possesses one of the event participants? Some languages can treat such “external possessors” as very closely involved, even marking them on the verb along with core roles such as subject and object. Other languages only allow possessors to be expressed as non-core participants. This task explores possibilities for the encoding of possessors and other related roles such as beneficiaries. The materials consist of a sequence of thirty drawings designed to elicit target construction types.

    Additional information

    1999_Story_book_booklet.pdf
  • Enfield, N. J. (1999). Lao as a national language. In G. Evans (Ed.), Laos: Culture and society (pp. 258-290). Chiang Mai: Silkworm Books.
  • Enfield, N. J. (1999). On the indispensability of semantics: Defining the ‘vacuous’. Rask: internationalt tidsskrift for sprog og kommunikation, 9/10, 285-304.
  • Fisher, S. E., Stein, J. F., & Monaco, A. P. (1999). A genome-wide search strategy for identifying quantitative trait loci involved in reading and spelling disability (developmental dyslexia). European Child & Adolescent Psychiatry, 8(suppl. 3), S47-S51. doi:10.1007/PL00010694.

    Abstract

    Family and twin studies of developmental dyslexia have consistently shown that there is a significant heritable component for this disorder. However, any genetic basis for the trait is likely to be complex, involving reduced penetrance, phenocopy, heterogeneity and oligogenic inheritance. This complexity results in reduced power for traditional parametric linkage analysis, where specification of the correct genetic model is important. One strategy is to focus on large multigenerational pedigrees with severe phenotypes and/or apparent simple Mendelian inheritance, as has been successfully demonstrated for speech and language impairment. This approach is limited by the scarcity of such families. An alternative which has recently become feasible due to the development of high-throughput genotyping techniques is the analysis of large numbers of sib-pairs using allele-sharing methodology. This paper outlines our strategy for conducting a systematic genome-wide search for genes involved in dyslexia in a large number of affected sib-pair familites from the UK. We use a series of psychometric tests to obtain different quantitative measures of reading deficit, which should correlate with different components of the dyslexia phenotype, such as phonological awareness and orthographic coding ability. This enable us to use QTL (quantitative trait locus) mapping as a powerful tool for localising genes which may contribute to reading and spelling disability.
  • Fisher, S. E., Marlow, A. J., Lamb, J., Maestrini, E., Williams, D. F., Richardson, A. J., Weeks, D. E., Stein, J. F., & Monaco, A. P. (1999). A quantitative-trait locus on chromosome 6p influences different aspects of developmental dyslexia. American Journal of Human Genetics, 64(1), 146-156. doi:10.1086/302190.

    Abstract

    Recent application of nonparametric-linkage analysis to reading disability has implicated a putative quantitative-trait locus (QTL) on the short arm of chromosome 6. In the present study, we use QTL methods to evaluate linkage to the 6p25-21.3 region in a sample of 181 sib pairs from 82 nuclear families that were selected on the basis of a dyslexic proband. We have assessed linkage directly for several quantitative measures that should correlate with different components of the phenotype, rather than using a single composite measure or employing categorical definitions of subtypes. Our measures include the traditional IQ/reading discrepancy score, as well as tests of word recognition, irregular-word reading, and nonword reading. Pointwise analysis by means of sib-pair trait differences suggests the presence, in 6p21.3, of a QTL influencing multiple components of dyslexia, in particular the reading of irregular words (P=.0016) and nonwords (P=.0024). A complementary statistical approach involving estimation of variance components supports these findings (irregular words, P=.007; nonwords, P=.0004). Multipoint analyses place the QTL within the D6S422-D6S291 interval, with a peak around markers D6S276 and D6S105 consistently identified by approaches based on trait differences (irregular words, P=.00035; nonwords, P=.0035) and variance components (irregular words, P=.007; nonwords, P=.0038). Our findings indicate that the QTL affects both phonological and orthographic skills and is not specific to phoneme awareness, as has been previously suggested. Further studies will be necessary to obtain a more precise localization of this QTL, which may lead to the isolation of one of the genes involved in developmental dyslexia.
  • Friederici, A., & Levelt, W. J. M. (1987). Resolving perceptual conflicts: The cognitive mechanism of spatial orientation. Aviation, Space, and Environmental Medicine, 58(9), A164-A169.
  • Friederici, A., & Levelt, W. J. M. (1987). Sprache. In K. Immelmann, K. Scherer, & C. Vogel (Eds.), Funkkolleg Psychobiologie (pp. 58-87). Weinheim: Beltz.
  • Gullberg, M., & Holmqvist, K. (1999). Keeping an eye on gestures: Visual perception of gestures in face-to-face communication. Pragmatics & Cognition, 7(1), 35-63. doi:10.1075/pc.7.1.04gul.

    Abstract

    Since listeners usually look at the speaker's face, gestural information has to be absorbed through peripheral visual perception. In the literature, it has been suggested that listeners look at gestures under certain circumstances: 1) when the articulation of the gesture is peripheral; 2) when the speech channel is insufficient for comprehension; and 3) when the speaker him- or herself indicates that the gesture is worthy of attention. The research here reported employs eye tracking techniques to study the perception of gestures in face-to-face interaction. The improved control over the listener's visual channel allows us to test the validity of the above claims. We present preliminary findings substantiating claims 1 and 3, and relate them to theoretical proposals in the literature and to the issue of how visual and cognitive attention are related.
  • Hagoort, P. (1999). De toekomstige eeuw zonder psychologie. Psychologie Magazine, 18, 35-36.
  • Hagoort, P., & Brown, C. M. (1999). Gender electrified: ERP evidence on the syntactic nature of gender processing. Journal of Psycholinguistic Research, 28(6), 715-728. doi:10.1023/A:1023277213129.

    Abstract

    The central issue of this study concerns the claim that the processing of gender agreement in online sentence comprehension is a syntactic rather than a conceptual/semantic process. This claim was tested for the grammatical gender agreement in Dutch between the definite article and the noun. Subjects read sentences in which the definite article and the noun had the same gender and sentences in which the gender agreement was violated, While subjects read these sentences, their electrophysiological activity was recorded via electrodes placed on the scalp. Earlier research has shown that semantic and syntactic processing events manifest themselves in different event-related brain potential (ERP) effects. Semantic integration modulates the amplitude of the so-called N400.The P600/SPS is an ERP effect that is more sensitive to syntactic processes. The violation of grammatical gender agreement was found to result in a P600/SPS. For violations in sentence-final position, an additional increase of the N400 amplitude was observed. This N400 effect is interpreted as resulting from the consequence of a syntactic violation for the sentence-final wrap-up. The overall pattern of results supports the claim that the on-line processing of gender agreement information is not a content driven but a syntactic-form driven process.
  • Hagoort, P., & Brown, C. M. (1999). The consequences of the temporal interaction between syntactic and semantic processes for haemodynamic studies of language. NeuroImage, 9, S1024-S1024.
  • Hagoort, P., Brown, C. M., & Osterhout, L. (1999). The neurocognition of syntactic processing. In C. M. Brown, & P. Hagoort (Eds.), The neurocognition of language (pp. 273-317). Oxford: Oxford University Press.
  • Hagoort, P., Ramsey, N., Rutten, G.-J., & Van Rijen, P. (1999). The role of the left anterior temporal cortex in language processing. Brain and Language, 69, 322-325. doi:10.1006/brln.1999.2169.
  • Hagoort, P., Indefrey, P., Brown, C. M., Herzog, H., Steinmetz, H., & Seitz, R. J. (1999). The neural circuitry involved in the reading of german words and pseudowords: A PET study. Journal of Cognitive Neuroscience, 11(4), 383-398. doi:10.1162/089892999563490.

    Abstract

    Silent reading and reading aloud of German words and pseudowords were used in a PET study using (15O)butanol to examine the neural correlates of reading and of the phonological conversion of legal letter strings, with or without meaning.
    The results of 11 healthy, right-handed volunteers in the age range of 25 to 30 years showed activation of the lingual gyri during silent reading in comparison with viewing a fixation cross. Comparisons between the reading of words and pseudowords suggest the involvement of the middle temporal gyri in retrieving both the phonological and semantic code for words. The reading of pseudowords activates the left inferior frontal gyrus, including the ventral part of Broca’s area, to a larger extent than the reading of words. This suggests that this area might be involved in the sublexical conversion of orthographic input strings into phonological output codes. (Pre)motor areas were found to be activated during both silent reading and reading aloud. On the basis of the obtained activation patterns, it is hypothesized that the articulation of high-frequency syllables requires the retrieval of their concomitant articulatory gestures from the SMA and that the articulation of lowfrequency syllables recruits the left medial premotor cortex.
  • Hagoort, P. (1999). The uniquely human capacity for language communication: from 'pope' to [po:p] in half a second. In J. Russell, M. Murphy, T. Meyering, & M. Arbib (Eds.), Neuroscience and the person: Scientific perspectives on divine action (pp. 45-56). California: Berkeley.
  • Heritage, J., & Stivers, T. (1999). Online commentary in acute medical visits: A method of shaping patient expectations. Social Science and Medicine, 49(11), 1501-1517. doi:10.1016/S0277-9536(99)00219-1.
  • Indefrey, P., & Levelt, W. J. M. (1999). A meta-analysis of neuroimaging experiments on word production. Neuroimage, 7, 1028.
  • Indefrey, P. (1999). Some problems with the lexical status of nondefault inflection. Behavioral and Brain Sciences, 22(6), 1025. doi:10.1017/S0140525X99342229.

    Abstract

    Clahsen's characterization of nondefault inflection as based exclusively on lexical entries does not capture the full range of empirical data on German inflection. In the verb system differential effects of lexical frequency seem to be input-related rather than affecting morphological production. In the noun system, the generalization properties of -n and -e plurals exceed mere analogy-based productivity.
  • Kempen, G., Anbeek, G., Desain, P., Konst, L., & De Smedt, K. (1987). Auteursomgevingen: Vijfde-generatie tekstverwerkers. Informatie, 29, 988-993.
  • Kempen, G., Anbeek, G., Desain, P., Konst, L., & De Semdt, K. (1987). Author environments: Fifth generation text processors. In Commission of the European Communities. Directorate-General for Telecommunications, Information Industries, and Innovation (Ed.), Esprit'86: Results and achievements (pp. 365-372). Amsterdam: Elsevier Science Publishers.
  • Kempen, G., Anbeek, G., Desain, P., Konst, L., & De Smedt, K. (1987). Author environments: Fifth generation text processors. In Commission of the European Communities. Directorate-General for Telecommunications, Information Industries, and Innovation (Ed.), Esprit'86: Results and achievements (pp. 365-372). Amsterdam: Elsevier Science Publishers.
  • Kempen, G., & Hoenkamp, E. (1987). An incremental procedural grammar for sentence formulation. Cognitive Science, 11(2), 201-258.

    Abstract

    This paper presents a theory of the syntactic aspects of human sentence production. An important characteristic of unprepared speech is that overt pronunciation of a sentence can be initiated before the speaker has completely worked out the meaning content he or she is going to express in that sentence. Apparently, the speaker is able to build up a syntactically coherent utterance out of a series of syntactic fragments each rendering a new part of the meaning content. This incremental, left-to-right mode of sentence production is the central capability of the proposed Incremental Procedural Grammar (IPG). Certain other properties of spontaneous speech, as derivable from speech errors, hesitations, self-repairs, and language pathology, are accounted for as well. The psychological plausibility thus gained by the grammar appears compatible with a satisfactory level of linguistic plausibility in that sentences receive structural descriptions which are in line with current theories of grammar. More importantly, an explanation for the existence of configurational conditions on transformations and other linguistics rules is proposed. The basic design feature of IPG which gives rise to these psychologically and linguistically desirable properties, is the “Procedures + Stack” concept. Sentences are built not by a central constructing agency which overlooks the whole process but by a team of syntactic procedures (modules) which work-in parallel-on small parts of the sentence, have only a limited overview, and whose sole communication channel is a stock. IPG covers object complement constructions, interrogatives, and word order in main and subordinate clauses. It handles unbounded dependencies, cross-serial dependencies and coordination phenomena such as gapping and conjunction reduction. It is also capable of generating self-repairs and elliptical answers to questions. IPG has been implemented as an incremental Dutch sentence generator written in LISP.
  • Kempen, G. (1999). Fiets en (centri)fuge. Onze Taal, 68, 88.
  • Kempen, G. (1987). Tekstverwerking: De vijfde generatie. Informatie, 29, 402-406.
  • Kempen, G. (1999). Visual Grammar: Multimedia for grammar and spelling instruction in primary education. In K. Cameron (Ed.), CALL: Media, design, and applications (pp. 223-238). Lisse: Swets & Zeitlinger.
  • Kita, S., & Ozyurek, A. (1999). Semantische Koordination zwischen Sprache und spontanen ikonischen Gesten: Eine sprachvergleichende Untersuchung. In Max-Planck-Gesellschaft (Ed.), Jahrbuch 1998 (pp. 388-391). Göttingen: Vandenhoeck & Ruprecht.
  • Klein, W., & Musan, R. (Eds.). (1999). Das deutsche Perfekt [Special Issue]. Zeitschrift für Literaturwissenschaft und Linguistik, (113).
  • Klein, W. (1987). Das Geltende, oder: System der Überzeugungen. Zeitschrift für Literaturwissenschaft und Linguistik, (64), 10-31.
  • Klein, W. (1987). Eine Verschärfung des Entscheidungsproblems. Rechtshistorisches Journal, 6, 209-210.
  • Klein, W. (1999). Die Lehren des Zweitspracherwerbs. In N. Dittmar, & A. Ramat (Eds.), Grammatik und Diskurs: Studien zum Erwerb des Deutschen und des Italienischen (pp. 279-290). Tübingen: Stauffenberg.
  • Klein, W. (1987). L'espressione della temporalita in una varieta elementare di L2. In A. Ramat (Ed.), L'apprendimento spontaneo di una seconda lingua (pp. 131-146). Bologna: Molino.
  • Klein, W., & Von Stutterheim, C. (1987). Quaestio und referentielle Bewegung in Erzählungen. Linguistische Berichte, 109, 163-183.
  • Klein, W. (Ed.). (1987). Sprache und Ritual [Special Issue]. Zeitschrift für Literaturwissenschaft und Linguistik, (65).
  • Klein, W. (1999). Wie sich das deutsche Perfekt zusammensetzt. Zeitschrift für Literaturwissenschaft und Linguistik; Metzler, Stuttgart, (113), 52-85.
  • Levelt, W. J. M. (1999). Language. In G. Adelman, & B. H. Smith (Eds.), Elsevier's encyclopedia of neuroscience (2nd enlarged and revised edition) (pp. 1005-1008). Amsterdam: Elsevier Science.
  • Levelt, C. C., Schiller, N. O., & Levelt, W. J. M. (1999). A developmental grammar for syllable structure in the production of child language. Brain and Language, 68, 291-299.

    Abstract

    The order of acquisition of Dutch syllable types by first language learners is analyzed as following from an initial ranking and subsequent rerankings of constraints in an optimality theoretic grammar. Initially, structural constraints are all ranked above faithfulness constraints, leading to core syllable (CV) productions only. Subsequently, faithfulness gradually rises to the highest position in the ranking, allowing more and more marked syllable types to appear in production. Local conjunctions of Structural constraints allow for a more detailed analysis.
  • Levelt, W. J. M., Roelofs, A., & Meyer, A. S. (1999). A theory of lexical access in speech production. Behavioral and Brain Sciences, 22, 1-38. doi:10.1017/S0140525X99001776.

    Abstract

    Preparing words in speech production is normally a fast and accurate process. We generate them two or three per second in fluent conversation; and overtly naming a clear picture of an object can easily be initiated within 600 msec after picture onset. The underlying process, however, is exceedingly complex. The theory reviewed in this target article analyzes this process as staged and feedforward. After a first stage of conceptual preparation, word generation proceeds through lexical selection, morphological and phonological encoding, phonetic encoding, and articulation itself. In addition, the speaker exerts some degree of output control, by monitoring of self-produced internal and overt speech. The core of the theory, ranging from lexical selection to the initiation of phonetic encoding, is captured in a computational model, called WEAVER + +. Both the theory and the computational model have been developed in interaction with reaction time experiments, particularly in picture naming or related word production paradigms, with the aim of accounting. for the real-time processing in normal word production. A comprehensive review of theory, model, and experiments is presented. The model can handle some of the main observations in the domain of speech errors (the major empirical domain for most other theories of lexical access), and the theory opens new ways of approaching the cerebral organization of speech production by way of high-temporal-resolution imaging.
  • Levelt, W. J. M. (1999). Models of word production. Trends in Cognitive Sciences, 3, 223-232.

    Abstract

    Research on spoken word production has been approached from two angles. In one research tradition, the analysis of spontaneous or induced speech errors led to models that can account for speech error distributions. In another tradition, the measurement of picture naming latencies led to chronometric models accounting for distributions of reaction times in word production. Both kinds of models are, however, dealing with the same underlying processes: (1) the speaker’s selection of a word that is semantically and syntactically appropriate; (2) the retrieval of the word’s phonological properties; (3) the rapid syllabification of the word in context; and (4) the preparation of the corresponding articulatory gestures. Models of both traditions explain these processes in terms of activation spreading through a localist, symbolic network. By and large, they share the main levels of representation: conceptual/semantic, syntactic, phonological and phonetic. They differ in various details, such as the amount of cascading and feedback in the network. These research traditions have begun to merge in recent years, leading to highly constructive experimentation. Currently, they are like two similar knives honing each other. A single pair of scissors is in the making.
  • Levelt, W. J. M. (1962). Motion breaking and the perception of causality. In A. Michotte (Ed.), Causalité, permanence et réalité phénoménales: Etudes de psychologie expérimentale (pp. 244-258). Louvain: Publications Universitaires.
  • Levelt, W. J. M., Roelofs, A., & Meyer, A. S. (1999). Multiple perspectives on lexical access [authors' response ]. Behavioral and Brain Sciences, 22, 61-72. doi:10.1017/S0140525X99451775.
  • Levelt, W. J. M. (1987). Hochleistung in Millisekunden - Sprechen und Sprache verstehen. In Jahrbuch der Max-Planck-Gesellschaft (pp. 61-77). Göttingen: Vandenhoeck & Ruprecht.
  • Levelt, W. J. M. (1999). Producing spoken language: A blueprint of the speaker. In C. M. Brown, & P. Hagoort (Eds.), The neurocognition of language (pp. 83-122). Oxford University Press.
  • Levelt, W. J. M., & d'Arcais, F. (1987). Snelheid en uniciteit bij lexicale toegang. In H. Crombag, L. Van der Kamp, & C. Vlek (Eds.), De psychologie voorbij: Ontwikkelingen rond model, metriek en methode in de gedragswetenschappen (pp. 55-68). Lisse: Swets & Zeitlinger.
  • Levinson, S. C. (1999). Deixis. In K. Brown, & J. Miller (Eds.), Concise encyclopedia of grammatical categories (pp. 132-136). Oxford: Elsevier.
  • Levinson, S. C. (1999). Deixis and Demonstratives. In D. Wilkins (Ed.), Manual for the 1999 Field Season (pp. 29-40). Nijmegen: Max Planck Institute for Psycholinguistics. doi:10.17617/2.2573810.

    Abstract

    Demonstratives are key items in understanding how a language constructs and interprets spatial relationships. They are also multi-functional, with applications to non-spatial deictic fields such as time, perception, person and discourse, and uses in anaphora and affect marking. This item consists of an overview of theoretical distinctions in demonstrative systems, followed by a set of practical queries and elicitation suggestions for demonstratives in “table top” space, wider spatial fields, and naturalistic data.
  • Levinson, S. C. (1999). General Questions About Topological Relations in Adpositions and Cases. In D. Wilkins (Ed.), Manual for the 1999 Field Season (pp. 57-68). Nijmegen: Max Planck Institute for Psycholinguistics. doi:10.17617/2.2615829.

    Abstract

    The world’s languages encode a diverse range of topological relations. However, cross-linguistic investigation suggests that the relations IN, AT and ON are especially fundamental to the grammaticised expression of space. The purpose of this questionnaire is to collect information about adpositions, case markers, and spatial nominals that are involved in the expression of core IN/AT/ON meanings. The task explores the more general parts of a language’s topological system, with a view to testing certain hypotheses about the packaging of spatial concepts. The questionnaire consists of target translation sentences that focus on a number of dimensions including animacy, caused location and motion.
  • Levinson, S. C. (1999). Hypotheses concerning basic locative constructions and the verbal elements within them. In D. Wilkins (Ed.), Manual for the 1999 Field Season (pp. 55-56). Nijmegen: Max Planck Institute for Psycholinguistics. doi:10.17617/2.3002711.

    Abstract

    Languages differ widely in terms of how they encode the fundamental concepts of location and position. For some languages, verbs have an important role to play in describing situations (e.g., whether a bottle is standing or lying on the table); for others, verbs are not used in describing location at all. This item outlines certain hypotheses concerning four “types” of languages: those that have verbless basic locatives; those that use a single verb; those that have several verbs available to express location; and those that use positional verbs. The document was originally published as an appendix to the 'Picture series for positional verbs' (https://doi.org/10.17617/2.2573831).
  • Levinson, S. C. (1987). Implicature explicated? [Comment on Sperber and Wilson]. Behavioral and Brain Sciences, 10(4), 722-723.

    Abstract

    Comment on Sperber and Wilson
  • Levinson, S. C. (1999). Maxim. Journal of Linguistic Anthropology, 9, 144-147. doi:10.1525/jlin.1999.9.1-2.144.
  • Levinson, S. C. (1999). Language and culture. In R. Wilson, & F. Keil (Eds.), MIT encyclopedia of the cognitive sciences (pp. 438-440). Cambridge: MIT press.
  • Levinson, S. C. (1987). Pragmatics and the grammar of anaphora: A partial pragmatic reduction of Binding and Control phenomena. Journal of Linguistics, 23, 379-434. doi:10.1017/S0022226700011324.

    Abstract

    This paper is one in a series that develops a pragmatic framework in loose confederation with Jay Atlas and Larry Horn: thus they may or may not be responsible for the ideas contained herein. Jay Atlas provided many comments which I have utilized or perverted as the case may be. The Australian data to which this framework is applied was collected with the financial and personal assistance of many people and agencies acknowledged separately below; but I must single out for special thanks John Haviland, who recommended the study of Guugu Yimidhirr anaphora to me and upon whose grammatical work on Guugu Yimidhirr this paper is but a minor (and perhaps flawed) elaboration. A grant from the British Academy allowed me to visit Haviland in September 1986 to discuss many aspects of Guugu Yimidhirr with him, and I am most grateful to the Academy for funding this trip and to Haviland for generously making available his time, his texts (from which I have drawn many examples, not always with specific acknowledgement) and most especially his expertise. Where I have diverged from his opinion I may well learn to regret it. I must also thank Nigel Vincent for putting me in touch with a number of recent relevant developments in syntax (only some of which I have been able to address) and for suggestions for numerous improvements. In addition, I have benefited immensely for comments on a distinct but related paper (Levinson, 1987) kindly provided by Jay Atlas, John Haviland, John Heritage, Phil Johnson-Laird, John Lyons, Tanya Reinhart, Emanuel Schegloff and an anonymous referee; and from comments on this paper by participants in the Cambridge Linguistics Department seminar where it was first presented (especial thanks to John Lyons and Huang Yan for further comments, and Mary Smith for a counter-example). Despite all this help, there are sure to be errors of data and analysis that I have persisted in. Aid in gathering the Australian data is acknowledged separately below.
  • McQueen, J. M., Norris, D., & Cutler, A. (1999). Lexical influence in phonetic decision-making: Evidence from subcategorical mismatches. Journal of Experimental Psychology: Human Perception and Performance, 25, 1363-1389. doi:10.1037/0096-1523.25.5.1363.

    Abstract

    In 5 experiments, listeners heard words and nonwords, some cross-spliced so that they contained acoustic-phonetic mismatches. Performance was worse on mismatching than on matching items. Words cross-spliced with words and words cross-spliced with nonwords produced parallel results. However, in lexical decision and 1 of 3 phonetic decision experiments, performance on nonwords cross-spliced with words was poorer than on nonwords cross-spliced with nonwords. A gating study confirmed that there were misleading coarticulatory cues in the cross-spliced items; a sixth experiment showed that the earlier results were not due to interitem differences in the strength of these cues. Three models of phonetic decision making (the Race model, the TRACE model, and a postlexical model) did not explain the data. A new bottom-up model is outlined that accounts for the findings in terms of lexical involvement at a dedicated decision-making stage.
  • Meyer, A. S., & Bock, K. (1999). Representations and processes in the production of pronouns: Some perspectives from Dutch. Journal of Memory and Language, 41(2), 281-301. doi:doi:10.1006/jmla.1999.2649.

    Abstract

    The production and interpretation of pronouns involves the identification of a mental referent and, in connected speech or text, a discourse antecedent. One of the few overt signals of the relationship between a pronoun and its antecedent is agreement in features such as number and grammatical gender. To examine how speakers create these signals, two experiments tested conceptual, lexical. and morphophonological accounts of pronoun production in Dutch. The experiments employed sentence completion and continuation tasks with materials containing noun phrases that conflicted or agreed in grammatical gender. The noun phrases served as the antecedents for demonstrative pronouns tin Experiment 1) and relative pronouns tin Experiment 2) that required gender marking. Gender errors were used to assess the nature of the processes that established the link between pronouns and antecedents. There were more gender errors when candidate antecedents conflicted in grammatical gender, counter to the predictions of a pure conceptual hypothesis. Gender marking on candidate antecedents did not change the magnitude of this interference effect, counter to the predictions of an overt-morphology hypothesis. Mirroring previous findings about pronoun comprehension, the results suggest that speakers of gender-marking languages call on specific linguistic information about antecedents in order to select pronouns and that the information consists of specifications of grammatical gender associated with the lemmas of words.
  • Nijhof, S., & Zwitserlood, I. (1999). Pluralization in Sign Language of the Netherlands (NGT). In J. Don, & T. Sanders (Eds.), OTS Yearbook 1998-1999 (pp. 58-78). Utrecht: UiL OTS.
  • Osterhout, L., & Hagoort, P. (1999). A superficial resemblance does not necessarily mean you are part of the family: Counterarguments to Coulson, King and Kutas (1998) in the P600/SPS-P300 debate. Language and Cognitive Processes, 14, 1-14. doi:10.1080/016909699386356.

    Abstract

    Two recent studies (Coulson et al., 1998;Osterhout et al., 1996)examined the
    relationship between the event-related brain potential (ERP) responses to linguistic syntactic anomalies (P600/SPS) and domain-general unexpected events (P300). Coulson et al. concluded that these responses are highly similar, whereas Osterhout et al. concluded that they are distinct. In this comment, we evaluate the relativemerits of these claims. We conclude that the available evidence indicates that the ERP response to syntactic anomalies is at least partially distinct from the ERP response to unexpected anomalies that do not involve a grammatical violation
  • Otake, T., & Cutler, A. (1999). Perception of suprasegmental structure in a nonnative dialect. Journal of Phonetics, 27, 229-253. doi:10.1006/jpho.1999.0095.

    Abstract

    Two experiments examined the processing of Tokyo Japanese pitchaccent distinctions by native speakers of Japanese from two accentlessvariety areas. In both experiments, listeners were presented with Tokyo Japanese speech materials used in an earlier study with Tokyo Japanese listeners, who clearly exploited the pitch-accent information in spokenword recognition. In the "rst experiment, listeners judged from which of two words, di!ering in accentual structure, isolated syllables had been extracted. Both new groups were, overall, as successful at this task as Tokyo Japanese speakers had been, but their response patterns differed from those of the Tokyo Japanese, for instance in that a bias towards H judgments in the Tokyo Japanese responses was weakened in the present groups' responses. In a second experiment, listeners heard word fragments and guessed what the words were; in this task, the speakers from accentless areas again performed significantly above chance, but their responses showed less sensitivity to the information in the input, and greater bias towards vocabulary distribution frequencies, than had been observed with the Tokyo Japanese listeners. The results suggest that experience with a local accentless dialect affects the processing of accent for word recognition in Tokyo Japanese, even for listeners with extensive exposure to Tokyo Japanese.
  • Petersson, K. M., Elfgren, C., & Ingvar, M. (1999). Dynamic changes in the functional anatomy of the human brain during recall of abstract designs related to practice. Neuropsychologia, 37, 567-587.

    Abstract

    In the present PET study we explore some functional aspects of the interaction between attentional/control processes and learning/memory processes. The network of brain regions supporting recall of abstract designs were studied in a less practiced and in a well practiced state. The results indicate that automaticity, i.e., a decreased dependence on attentional and working memory resources, develops as a consequence of practice. This corresponds to the practice related decreases of activity in the prefrontal, anterior cingulate, and posterior parietal regions. In addition, the activity of the medial temporal regions decreased as a function of practice. This indicates an inverse relation between the strength of encoding and the activation of the MTL during retrieval. Furthermore, the pattern of practice related increases in the auditory, posterior insular-opercular extending into perisylvian supra marginal region, and the right mid occipito-temporal region, may reflect a lower degree of inhibitory attentional modulation of task irrelevant processing and more fully developed representations of the abstract designs, respectively. We also suggest that free recall is dependent on bilateral prefrontal processing, in particular non-automatic free recall. The present results cofirm previous functional neuroimaging studies of memory retrieval indicating that recall is subserved by a network of interacting brain regions. Furthermore, the results indicate that some components of the neural network subserving free recall may have a dynamic role and that there is a functional restructuring of the information processing networks during the learning process.
  • Petersson, K. M., Reis, A., Castro-Caldas, A., & Ingvar, M. (1999). Effective auditory-verbal encoding activates the left prefrontal and the medial temporal lobes: A generalization to illiterate subjects. NeuroImage, 10, 45-54. doi:10.1006/nimg.1999.0446.

    Abstract

    Recent event-related FMRI studies indicate that the prefrontal (PFC) and the medial temporal lobe (MTL) regions are more active during effective encoding than during ineffective encoding. The within-subject design and the use of well-educated young college students in these studies makes it important to replicate these results in other study populations. In this PET study, we used an auditory word-pair association cued-recall paradigm and investigated a group of healthy upper middle-aged/older illiterate women. We observed a positive correlation between cued-recall success and the regional cerebral blood flow of the left inferior PFC (BA 47) and the MTLs. Specifically, we used the cuedrecall success as a covariate in a general linear model and the results confirmed that the left inferior PFC and the MTLare more active during effective encoding than during ineffective encoding. These effects were observed during encoding of both semantically and phonologically related word pairs, indicating that these effects are robust in the studied population, that is, reproducible within group. These results generalize the results of Brewer et al. (1998, Science 281, 1185– 1187) and Wagner et al. (1998, Science 281, 1188–1191) to an upper middle aged/older illiterate population. In addition, the present study indicates that effective relational encoding correlates positively with the activity of the anterior medial temporal lobe regions.
  • Petersson, K. M., Elfgren, C., & Ingvar, M. (1999). Learning-related effects and functional neuroimaging. Human Brain Mapping, 7, 234-243. doi:10.1002/(SICI)1097-0193(1999)7:4<234:AID-HBM2>3.0.CO;2-O.

    Abstract

    A fundamental problem in the study of learning is that learning-related changes may be confounded by nonspecific time effects. There are several strategies for handling this problem. This problem may be of greater significance in functional magnetic resonance imaging (fMRI) compared to positron emission tomography (PET). Using the general linear model, we describe, compare, and discuss two approaches for separating learning-related from nonspecific time effects. The first approach makes assumptions on the general behavior of nonspecific effects and explicitly models these effects, i.e., nonspecific time effects are incorporated as a linear or nonlinear confounding covariate in the statistical model. The second strategy makes no a priori assumption concerning the form of nonspecific time effects, but implicitly controls for nonspecific effects using an interaction approach, i.e., learning effects are assessed with an interaction contrast. The two approaches depend on specific assumptions and have specific limitations. With certain experimental designs, both approaches may be used and the results compared, lending particular support to effects that are independent of the method used. A third and perhaps better approach that sometimes may be practically unfeasible is to use a completely temporally balanced experimental design. The choice of approach may be of particular importance when learning related effects are studied with fMRI.
  • Petersson, K. M., Nichols, T. E., Poline, J.-B., & Holmes, A. P. (1999). Statistical limitations in functional neuroimaging I: Non-inferential methods and statistical models. Philosofical Transactions of the Royal Soeciety B, 354, 1239-1260.
  • Petersson, K. M., Nichols, T. E., Poline, J.-B., & Holmes, A. P. (1999). Statistical limitations in functional neuroimaging II: Signal detection and statistical inference. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 354, 1261-1282.

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