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Perceptual formant discrimination during speech movement planning

Evoked potential studies have shown that speech planning modulates auditory cortical responses. The phenomenon’s functional relevance is unknown. We tested whether, during this time window of cortical auditory modulation, there is an effect on speakers’ perceptual sensitivity for vowel formant discr...

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Autores principales: Wang, Hantao, Ali, Yusuf, Max, Ludo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Cold Spring Harbor Laboratory 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10592784/
https://www.ncbi.nlm.nih.gov/pubmed/37873157
http://dx.doi.org/10.1101/2023.10.11.561423
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author Wang, Hantao
Ali, Yusuf
Max, Ludo
author_facet Wang, Hantao
Ali, Yusuf
Max, Ludo
author_sort Wang, Hantao
collection PubMed
description Evoked potential studies have shown that speech planning modulates auditory cortical responses. The phenomenon’s functional relevance is unknown. We tested whether, during this time window of cortical auditory modulation, there is an effect on speakers’ perceptual sensitivity for vowel formant discrimination. Participants made same/different judgments for pairs of stimuli consisting of a pre-recorded, self-produced vowel and a formant-shifted version of the same production. Stimuli were presented prior to a “go” signal for speaking, prior to passive listening, and during silent reading. The formant discrimination stimulus /uh/ was tested with a congruent productions list (words with /uh/) and an incongruent productions list (words without /uh/). Logistic curves were fitted to participants’ responses, and the just-noticeable difference (JND) served as a measure of discrimination sensitivity. We found a statistically significant effect of condition (worst discrimination before speaking) without congruency effect. Post-hoc pairwise comparisons revealed that JND was significantly greater before speaking than during silent reading. Thus, formant discrimination sensitivity was reduced during speech planning regardless of the congruence between discrimination stimulus and predicted acoustic consequences of the planned speech movements. This finding may inform ongoing efforts to determine the functional relevance of the previously reported modulation of auditory processing during speech planning.
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spelling pubmed-105927842023-10-24 Perceptual formant discrimination during speech movement planning Wang, Hantao Ali, Yusuf Max, Ludo bioRxiv Article Evoked potential studies have shown that speech planning modulates auditory cortical responses. The phenomenon’s functional relevance is unknown. We tested whether, during this time window of cortical auditory modulation, there is an effect on speakers’ perceptual sensitivity for vowel formant discrimination. Participants made same/different judgments for pairs of stimuli consisting of a pre-recorded, self-produced vowel and a formant-shifted version of the same production. Stimuli were presented prior to a “go” signal for speaking, prior to passive listening, and during silent reading. The formant discrimination stimulus /uh/ was tested with a congruent productions list (words with /uh/) and an incongruent productions list (words without /uh/). Logistic curves were fitted to participants’ responses, and the just-noticeable difference (JND) served as a measure of discrimination sensitivity. We found a statistically significant effect of condition (worst discrimination before speaking) without congruency effect. Post-hoc pairwise comparisons revealed that JND was significantly greater before speaking than during silent reading. Thus, formant discrimination sensitivity was reduced during speech planning regardless of the congruence between discrimination stimulus and predicted acoustic consequences of the planned speech movements. This finding may inform ongoing efforts to determine the functional relevance of the previously reported modulation of auditory processing during speech planning. Cold Spring Harbor Laboratory 2023-10-11 /pmc/articles/PMC10592784/ /pubmed/37873157 http://dx.doi.org/10.1101/2023.10.11.561423 Text en https://creativecommons.org/licenses/by-nc/4.0/This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (https://creativecommons.org/licenses/by-nc/4.0/) , which allows reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.
spellingShingle Article
Wang, Hantao
Ali, Yusuf
Max, Ludo
Perceptual formant discrimination during speech movement planning
title Perceptual formant discrimination during speech movement planning
title_full Perceptual formant discrimination during speech movement planning
title_fullStr Perceptual formant discrimination during speech movement planning
title_full_unstemmed Perceptual formant discrimination during speech movement planning
title_short Perceptual formant discrimination during speech movement planning
title_sort perceptual formant discrimination during speech movement planning
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10592784/
https://www.ncbi.nlm.nih.gov/pubmed/37873157
http://dx.doi.org/10.1101/2023.10.11.561423
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