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Arana, S. (2022). Abstract neural representations of language during sentence comprehension: Evidence from MEG and Behaviour. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Bai, F. (2022). Neural representation of speech segmentation and syntactic structure discrimination. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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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.Additional information
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Den Hoed, J. (2022). Disentangling the molecular landscape of genetic variation of neurodevelopmental and speech disorders. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Estruch, S. B. (2018). Characterization of transcription factors in monogenic disorders of speech and language. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Hahn, L. E. (2022). Infants' perception of sound patterns in oral language play. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Hill, C. (2018). Person reference and interaction in Umpila/Kuuku Ya'u narrative. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Janssen, R. (2018). Let the agents do the talking: On the influence of vocal tract anatomy no speech during ontogeny. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Karadöller, D. Z. (2022). Development of spatial language and memory: Effects of language modality and late sign language exposure. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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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 morphologyAdditional information
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Kirsch, J. (2018). Listening for the WHAT and the HOW: Older adults' processing of semantic and affective information in speech. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Koch, X. (2018). Age and hearing loss effects on speech processing. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Kolipakam, V. (2018). A holistic approach to understanding pre-history. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Lutzenberger, H. (2022). Kata Kolok phonology - Variation and acquisition. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Mainz, N. (2018). Vocabulary knowledge and learning: Individual differences in adult native speakers. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Mak, M. (2022). What's on your mind: Mental simulation and aesthetic appreciation during literary reading. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Marcoux, K. (2022). Non-native Lombard speech: The acoustics, perception, and comprehension of English Lombard speech by Dutch natives. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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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).Additional information
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Merkx, D. (2022). Modelling multi-modal language learning: From sentences to words. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Misersky, J. (2022). About time: Exploring the role of grammatical aspect in event cognition. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Ostarek, M. (2018). Envisioning language: An exploration of perceptual processes in language comprehension. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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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.
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Shen, C. (2022). Individual differences in speech production and maximum speech performance. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Slivac, K. (2022). The enlanguaged brain: Cognitive and neural mechanisms of linguistic influence on perception. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Stoehr, A. (2018). Speech production, perception, and input of simultaneous bilingual preschoolers: Evidence from voice onset time. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Tromp, J. (2018). Indirect request comprehension in different contexts. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Troncoso Ruiz, A. (2022). Non-native phonetic accommodation in interactions with humans and with computers. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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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.Additional information
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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 inputAdditional information
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Wolf, M. C. (2022). Spoken and written word processing: Effects of presentation modality and individual differences in experience to written language. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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Yang, J. (2022). Discovering the units in language cognition: From empirical evidence to a computational model. PhD Thesis, Radboud University Nijmegen, Nijmegen.
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