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The coupling between auditory and motor cortices is rate-restricted: Evidence for an intrinsic speech-motor rhythm

The relation between perception and action remains a fundamental question for neuroscience. In the context of speech, existing data suggest an interaction between auditory and speech-motor cortices, but the underlying mechanisms remain incompletely characterized. We fill a basic gap in our understan...

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Detalles Bibliográficos
Autores principales: Assaneo, M. Florencia, Poeppel, David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5810610/
https://www.ncbi.nlm.nih.gov/pubmed/29441362
http://dx.doi.org/10.1126/sciadv.aao3842
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author Assaneo, M. Florencia
Poeppel, David
author_facet Assaneo, M. Florencia
Poeppel, David
author_sort Assaneo, M. Florencia
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description The relation between perception and action remains a fundamental question for neuroscience. In the context of speech, existing data suggest an interaction between auditory and speech-motor cortices, but the underlying mechanisms remain incompletely characterized. We fill a basic gap in our understanding of the sensorimotor processing of speech by examining the synchronization between auditory and speech-motor regions over different speech rates, a fundamental parameter delimiting successful perception. First, using magnetoencephalography, we measure synchronization between auditory and speech-motor regions while participants listen to syllables at various rates. We show, surprisingly, that auditory-motor synchrony is significant only over a restricted range and is enhanced at ~4.5 Hz, a value compatible with the mean syllable rate across languages. Second, neural modeling reveals that this modulated coupling plausibly emerges as a consequence of the underlying neural architecture. The findings suggest that the temporal patterns of speech emerge as a consequence of the intrinsic rhythms of cortical areas.
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spelling pubmed-58106102018-02-13 The coupling between auditory and motor cortices is rate-restricted: Evidence for an intrinsic speech-motor rhythm Assaneo, M. Florencia Poeppel, David Sci Adv Research Articles The relation between perception and action remains a fundamental question for neuroscience. In the context of speech, existing data suggest an interaction between auditory and speech-motor cortices, but the underlying mechanisms remain incompletely characterized. We fill a basic gap in our understanding of the sensorimotor processing of speech by examining the synchronization between auditory and speech-motor regions over different speech rates, a fundamental parameter delimiting successful perception. First, using magnetoencephalography, we measure synchronization between auditory and speech-motor regions while participants listen to syllables at various rates. We show, surprisingly, that auditory-motor synchrony is significant only over a restricted range and is enhanced at ~4.5 Hz, a value compatible with the mean syllable rate across languages. Second, neural modeling reveals that this modulated coupling plausibly emerges as a consequence of the underlying neural architecture. The findings suggest that the temporal patterns of speech emerge as a consequence of the intrinsic rhythms of cortical areas. American Association for the Advancement of Science 2018-02-07 /pmc/articles/PMC5810610/ /pubmed/29441362 http://dx.doi.org/10.1126/sciadv.aao3842 Text en Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Research Articles
Assaneo, M. Florencia
Poeppel, David
The coupling between auditory and motor cortices is rate-restricted: Evidence for an intrinsic speech-motor rhythm
title The coupling between auditory and motor cortices is rate-restricted: Evidence for an intrinsic speech-motor rhythm
title_full The coupling between auditory and motor cortices is rate-restricted: Evidence for an intrinsic speech-motor rhythm
title_fullStr The coupling between auditory and motor cortices is rate-restricted: Evidence for an intrinsic speech-motor rhythm
title_full_unstemmed The coupling between auditory and motor cortices is rate-restricted: Evidence for an intrinsic speech-motor rhythm
title_short The coupling between auditory and motor cortices is rate-restricted: Evidence for an intrinsic speech-motor rhythm
title_sort coupling between auditory and motor cortices is rate-restricted: evidence for an intrinsic speech-motor rhythm
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5810610/
https://www.ncbi.nlm.nih.gov/pubmed/29441362
http://dx.doi.org/10.1126/sciadv.aao3842
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