Publications

Displaying 1 - 34 of 34
  • Buckler, H. (2014). The acquisition of morphophonological alternations across languages. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Choi, J. (2014). Rediscovering a forgotten language. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Cholin, J. (2004). Syllables in speech production: Effects of syllable preparation and syllable frequency. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.60589.

    Abstract

    The fluent production of speech is a very complex human skill. It requires the coordination of several articulatory subsystems. The instructions that lead articulatory movements to execution are the result of the interplay of speech production levels that operate above the articulatory network. During the process of word-form encoding, the groundwork for the articulatory programs is prepared which then serve the articulators as basic units. This thesis investigated whether or not syllables form the basis for the articulatory programs and in particular whether or not these syllable programs are stored, separate from the store of the lexical word-forms. It is assumed that syllable units are stored in a so-called 'mental syllabary'. The main goal of this thesis was to find evidence of the syllable playing a functionally important role in speech production and for the assumption that syllables are stored units. In a variant of the implicit priming paradigm, it was investigated whether information about the syllabic structure of a target word facilitates the preparation (advanced planning) of a to-be-produced utterance. These experiments yielded evidence for the functionally important role of syllables in speech production. In a subsequent row of experiments, it could be demonstrated that the production of syllables is sensitive to frequency. Syllable frequency effects provide strong evidence for the notion of a mental syllabary because only stored units are likely to exhibit frequency effects. In a last study, effects of syllable preparation and syllable frequency were investigated in a combined study to disentangle the two effects. The results of this last experiment converged with those reported for the other experiments and added further support to the claim that syllables play a core functional role in speech production and are stored in a mental syllabary.

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  • Dietrich, C. (2006). The acquisition of phonological structure: Distinguishing contrastive from non-contrastive variation. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.57829.
  • Dingemanse, M. (2011). The meaning and use of ideophones in Siwu. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Eisner, F. (2006). Lexically-guided perceptual learning in speech processing. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.57407.

    Abstract

    During listening to spoken language, the perceptual system needs to adapt frequently to changes in talkers, and thus to considerable interindividual variability in the articulation of a given speech sound. This thesis investigated a learning process which allows listeners to use stored lexical representations to modify the interpretation of a speech sound when a talker's articulation of that sound is consistently unclear or ambiguous. The questions that were addressed in this research concerned the robustness of such perceptual learning, a potential role for sleep, and whether learning is specific to the speech of one talker or, alternatively, generalises to other talkers. A further study aimed to identify the underlying functional neuroanatomy by using magnetic resonance imaging methods. The picture that emerged for lexically-guided perceptual learning is that learning occurs very rapidly, is highly specific, and remains remarkably robust both over time and under exposure to speech from other talkers.

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  • Ellert, M. (2011). Ambiguous pronoun resolution in L1 and L2 German and Dutch. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • FitzPatrick, I. (2011). Lexical interactions in non-native speech comprehension: Evidence from electro-encephalography, eye-tracking, and functional magnetic resonance imaging. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Gipper, S. (2011). Evidentiality and intersubjectivity in Yurakaré: An interactional account. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Junge, C. (2011). The relevance of early word recognition: Insights from the infant brain. PhD Thesis, Radboud University Nijmegen, Nijmegen.

    Abstract

    Baby's begrijpen woorden eerder dan dat ze deze zeggen. Dit stadium is onderbelicht want moeilijk waarneembaar. Caroline Junge onderzocht de vaardigheden die nodig zijn voor het leren van de eerste woordjes: conceptherkenning, woordherkenning en het verbinden van woord aan betekenis. Daarvoor bestudeerde ze de hersenpotentialen van het babybrein tijdens het horen van woordjes. Junge stelt vast dat baby's van negen maanden al woordbegrip hebben. En dat is veel vroeger dan tot nu toe bekend was. Als baby's een woord hoorde dat niet klopte met het plaatje dat ze zagen, lieten ze een N400-effect zien, een klassiek hersenpotentiaal. Uit eerder Duits onderzoek is gebleken dat baby's van twaalf maanden dit effect nog niet laten zien, omdat de hersenen nog niet rijp zouden zijn. Het onderzoek van Junge weerlegt dit. Ook laat ze zien dat als baby's goed woorden kunnen herkennen binnen zinnetjes, dit belangrijk is voor hun latere taalontwikkeling, wat mogelijk tot nieuwe therapieën voor taalstoornissen zal leiden.

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  • 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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  • Kuzla, C. (2009). Prosodic structure in speech production and perception. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Meeuwissen, M. (2004). Producing complex spoken numerals for time and space. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.60607.

    Abstract

    This thesis addressed the spoken production of complex numerals for time and space. The production of complex numerical expressions like those involved in telling time (e.g., 'quarter to four') or producing house numbers (e.g., 'two hundred forty-five') has been almost completely ignored. Yet, adult speakers produce such expressions on a regular basis in everyday communication. Thus, no theory on numerical cognition or speech production is complete without an account of the production of multi-morphemic utterances such as complex numeral expressions. The main question of this thesis is which particular speech planning levels are involved in the naming and reading of complex numerals for time and space. More specifically, this issue was investigated by examining different modes of response (clock times versus house numbers), alternative input formats (Arabic digit versus alphabetic format; analog versus digital clock displays), and different expression types (relative 'quarter to four' versus absolute 'three forty-five' time expressions).

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  • Müller, O. (2006). Retrieving semantic and syntactic word properties: ERP studies on the time course in language comprehension. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.57543.

    Abstract

    The present doctoral thesis investigates the temporal characteristics of the retrieval of semantic and syntactic word properties in language comprehension. In particular, an attempt is made to assess the retrieval order of semantic category and grammatical gender information, using the lateralized readiness potential and the inhibition-related N2 effect. Chapter 1 contains a general introduction. Chapter 2 reports an experiment that employs the two-choice go/nogo task in combination with EEG recordings to establish the retrieval order of semantic category and grammatical gender for written words presented in isolation. The results point to a time course where semantic information becomes available before syntactic information. Chapter 3 focuses on the retrieval of grammatical gender. In order to examine whether gender retrieval can be speeded up by context, nouns are presented in gender congruent and gender incongruent prime-target pairs and reaction times for gender decisions are measured. For stimulus onset asynchronies of 100 ms and 0 ms, gender congruent pairs show faster responses than incongruent ones, whereas there is no effect of gender congruity for a stimulus onset asynchrony of 300 ms. A simulation with a localist computational model that implements competition between gender representations (WEAVER; Roelofs, 1992) is able to capture these findings. In chapter 4, the gender congruency manipulation is transferred to another ERP experiment with the two-choice go/nogo task. As the time course of gender retrieval is altered through primes, the order relative to semantic category retrieval is assessed again. The results indicate that with gender congruent primes, grammatical gender becomes available before semantic category. Such a reversal of retrieval order, as compared to chapter 2, implies a parallel rather than a serial discrete arrangement of the retrieval processes, since the latter variant precludes changes in retrieval order. Finally, chapter 5 offers a summary and general discussion of the main findings.

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  • Özdemir, R. (2006). The relationship between spoken word production and comprehension. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.59239.
  • Reifegerste, J. (2014). Morphological processing in younger and older people: Evidence for flexible dual-route access. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Robinson, S. (2011). Split intransitivity in Rotokas, a Papuan language of Bougainville. PhD Thesis, Radboud University, Nijmegen.
  • Schimke, S. (2009). The acquisition of finiteness by Turkish learners of German and Turkish learners of French: Investigating knowledge of forms and functions in production and comprehension. PhD Thesis, Radboud University Nijmegen, Nijmegen.

    Abstract

    Sarah Schimke onderzocht hoe mensen die op volwassen leeftijd naar een ander land verhuizen de taal van dit land leren, ook zonder veel taalinstructie te krijgen. Twee groepen werden onderzocht: Turkse immigranten in Frankrijk en Turkse immigranten in Duitsland. De resultaten laten zien dat volwassen leerlingen in het begin van het verwervingsproces een gemakkelijkere variatie van de doeltaal creëren. Er worden wel woorden van de doeltaal verworven en gebruikt, maar er wordt een gesimplificeerde grammatica toegepast. In het bijzonder gebruiken leerlingen in deze fase geen finietheid, dus geen morfologische variaties van werkwoorden. Schimke toont aan dat als finietheid wordt verworven, dit de grammatica van de leerlingen sterk verandert en dat deze veel sterker op de doeltaalgrammatica begint te lijken. Ook toont ze aan dat dit proces door karakteristieken van de doeltaal, zoals de woordvolgorde en de complexiteit van de morfologie, wordt beïnvloed

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  • Schmiedtová, B. (2004). At the same time.. The expression of simultaneity in learner varieties. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.59569.
  • Seyfeddinipur, M. (2006). Disfluency: Interrupting speech and gesture. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.59337.
  • Shatzman, K. B. (2006). Sensitivity to detailed acoustic information in word recognition. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.59331.
  • Sjerps, M. J. (2011). Adjusting to different speakers: Extrinsic normalization in vowel perception. PhD Thesis, Radboud University Nijmegen, Nijmegen.

    Abstract

    Op een gemiddelde dag luisteren mensen naar spraak van heel veel verschillende mensen. Die hebben allemaal een ander stemgeluid, waardoor de woorden die zij uitspreken verschillend klinken. Luisteraars hebben daar echter weinig hinder van. Hoe is het mogelijk dat luisteraars zich zo gemakkelijk kunnen aanpassen aan verschillende sprekers? Matthias Sjerps onderzocht in zijn proefschrift een cognitief mechanisme dat luisteraars helpt om zich aan te passen aan de karakteristieken van verschillende sprekers. Hierbij maakt een luisteraar gebruik van informatie in de context. Dit mechanisme blijkt vroeg in de spraakverwerking plaats te vinden. Bovendien beïnvloedt dit mechanisme ook de perceptie van andere geluiden dan spraak. Dit laat zien dat het een zeer breed en algemeen perceptueel mechanisme betreft. Contexteffecten bleken echter sterker voor spraakgeluiden dan voor andere geluiden. Dit suggereert dat het onderzochte mechanisme, ook al is het algemeen en breed toepasbaar, versterkt kan worden door blootstelling aan taal.

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  • Thorgrimsson, G. (2014). Infants' understanding of communication as participants and observers. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Torreira, F. (2011). Speech reduction in spontaneous French and Spanish. PhD Thesis, Radboud University Nijmegen, Nijmegen.

    Abstract

    Spraakklanken, lettergrepen en woorden worden vaak minder duidelijk uitgesproken in spontane conversaties dan in formelere spreekstijlen. Dit proefschrift presenteert onderzoek naar spraakreductie in spontaan Frans en Spaans. Naar deze talen is tot nu toe weinig spraakreductieonderzoek gedaan. Er worden twee nieuwe grote corpora met spontaan Frans en Spaans beschreven. Op basis van deze corpora heb ik enkele onderzoeken gedaan waarin ik de volgende belangrijke conclusies heb getrokken. Allereerst vond ik dat akoestische data van spontane spraak waardevolle informatie kan geven over de vraag of specifieke reductiefenomenen categoriaal of continu zijn. Verder vond ik, in tegenstelling tot onderzoek naar Germaanse talen, slechts gedeeltelijk bewijs dat spraakreductie in Romaanse talen als het Frans en het Spaans beïnvloed wordt door de eigenschappen en voorspelbaarheid van het woord. Ten derde vond ik door spontaan Frans en Spaans te vergelijken dat spraakreductie tussen talen meer kan verschillen dan je zou verwachten op basis van laboratoriumonderzoek

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  • Tsuji, S. (2014). The road to native listening. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Tuinman, A. (2011). Processing casual speech in native and non-native language. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Turco, G. (2014). Contrasting opposite polarity in Germanic and Romance languages: Verum focus and affirmative particles in native speakers and advanced L2 learners. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Van Alphen, P. M. (2004). Perceptual relevance of prevoicing in Dutch. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.58551.

    Abstract

    In this dissertation the perceptual relevance of prevoicing in Dutch was investigated. Prevoicing is the presence of vocal fold vibration during the closure of initial voiced plosives (negative voice onset time). The presence or absence of prevoicing is generally used to describe the difference between voiced and voiceless Dutch plosives. The first experiment described in this dissertation showed that prevoicing is frequently absent in Dutch and that several factors affect the production of prevoicing. A detailed acoustic analysis of the voicing distinction identified several acoustic correlates of voicing. Prevoicing appeared to be by far the best predictor. Perceptual classification data revealed that prevoicing was indeed the strongest cue that listeners use when classifying plosives as voiced or voiceless. In the cases where prevoicing was absent, other acoustic cues influenced classification, such that some of these tokens were still perceived as being voiced. In the second part of this dissertation the influence of prevoicing variation on spoken-word recognition was examined. In several cross-modal priming experiments two types of prevoicing variation were contrasted: a difference between the presence and absence of prevoicing (6 versus 0 periods of prevoicing) and a difference in the amount of prevoicing (12 versus 6 periods). All these experiments indicated that primes with 12 and 6 periods of prevoicing had the same effect on lexical decisions to the visual targets. The primes without prevoicing had a different effect, but only when their voiceless counterparts were real words. Phonetic detail appears to influence lexical access only when it is useful: In Dutch, the presence versus absence of prevoicing is informative, while the amount of prevoicing is not.

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  • Van de Ven, M. A. M. (2011). The role of acoustic detail and context in the comprehension of reduced pronunciation variants. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Van den Brink, D. (2004). Contextual influences on spoken-word processing: An electrophysiological approach. PhD Thesis, Radboud University Nijmegen, Nijmegen. doi:10.17617/2.57773.

    Abstract

    The aim of this thesis was to gain more insight into spoken-word comprehension and the influence of sentence-contextual information on these processes using ERPs. By manipulating critical words in semantically constraining sententes, in semantic or syntactic sense, and examining the consequences in the electrophysiological signal (e.g., elicitation of ERP components such as the N400, N200, LAN, and P600), three questions were tackled: I At which moment is context information used in the spoken-word recognition process? II What is the temporal relationship between lexical selection and integration of the meaning of a spoken word into a higher-order level representeation of the preceding sentence? III What is the time course of the processing of different sources of linguistic information obtained from the context, such as phonological, semantic and syntactic information, during spoken-word comprehension? From the results of this thesis it can be concluded that sentential context already exerts an influence on spoken-word processing at approximately 200 ms after word onset. In addition, semantic integration is attempted before a spoken word can be selected on the basis of the acoustic signal, i.e. before lexical selection is completed. Finally, knowledge of the syntactic category of a word is not needed before semantic integration can take place. These findings, therefore, were interpreted as providing evidence for an account of cascaded spoken-word processing that proclaims an optimal use of contextual information during spoken-word identification. Optimal use is accomplished by allowing for semantic and syntactic processing to take place in parallel after bottom-up activation of a set of candidates, and lexical integration to proceed with a limited number of candidates that still match the acoustic input

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  • Van Putten, S. (2014). Information structure in Avatime. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Veenstra, A. (2014). Semantic and syntactic constraints on the production of subject-verb agreement. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Verkerk, A. (2014). The evolutionary dynamics of motion event encoding. PhD Thesis, Radboud University Nijmegen, Nijmegen.
  • Wang, L. (2011). The influence of information structure on language comprehension: A neurocognitive perspective. PhD Thesis, Radboud University Nijmegen, Nijmegen.

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