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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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Formato: | Online Artículo Texto |
Lenguaje: | English |
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American Association for the Advancement of Science
2018
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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 |
collection | PubMed |
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. |
format | Online Article Text |
id | pubmed-5810610 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
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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