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Phonological expectations override semantic mismatch during speech in noise perception
Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. Linköping University, Center for Medical Image Science and Visualization (CMIV). (Linnaeus Centre HEAD)ORCID iD: 0000-0001-8903-7931
Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences.
Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. Linköping University, The Swedish Institute for Disability Research.
Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. Linköping University, The Swedish Institute for Disability Research. (Linnaeus Centre HEAD)
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2017 (English)Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

Perception of speech in noise is modulated by stimulus-driven and knowledge-driven processes. In the ELU model, working memory capacity (WM) has been proposed to play a determinant role in the resolution of a mismatch between knowledge-based predictions and stimulus-based processing. However, the neural correlates and the temporal course of the mismatch resolution have not been investigated. After exposure to 48 semantically coherent couplets, 20 normal-hearing participants were tested in a MEG study. Couplet sentences were presented in background noise with 80% intelligibility, except the last word of the couplet that was presented with 50% intelligibility. This last word could be either 1) the word that was in the exposure couplet, or 2) a phonologically related but semantically incorrect word, or 3) a semantically coherent but phonologically incorrect word, or 4) a semantically and phonologically incorrect word. Before the presentation of the last word, participants had time to predict it and their task was to answer if the presented word was the correct one. Behavioural results showed more errors in the condition 2 than conditions 3 or 4, suggesting that phonological compatibility overrides semantic mismatch when intelligibility is poor. Preliminary results of the neural correlates reflecting the role of WM in the mismatch resolution between the knowledge-driven and stimulus-driven processes will be presented.

Place, publisher, year, edition, pages
2017.
National Category
Psychology
Identifiers
URN: urn:nbn:se:liu:diva-141276OAI: oai:DiVA.org:liu-141276DiVA: diva2:1145175
Conference
Fourth International Conference on Cognitive Hearing Science for Communication, Linköping, Sweden, June 18-22, 2017
Available from: 2017-09-28 Created: 2017-09-28 Last updated: 2017-09-28

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Signoret, CarineBlomberg, RinaRudner, MaryRönnberg, Jerker
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Disability ResearchFaculty of Arts and SciencesCenter for Medical Image Science and Visualization (CMIV)The Swedish Institute for Disability Research
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Citation style
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  • vancouver
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