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Rapid tuning shifts in human auditory cortex enhance speech intelligibility

Experience shapes our perception of the world on a moment-to-moment basis. This robust perceptual effect of experience parallels a change in the neural representation of stimulus features, though the nature of this representation and its plasticity are not well-understood. Spectrotemporal receptive...

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Autores principales: Holdgraf, Christopher R., de Heer, Wendy, Pasley, Brian, Rieger, Jochem, Crone, Nathan, Lin, Jack J., Knight, Robert T., Theunissen, Frédéric E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5187445/
https://www.ncbi.nlm.nih.gov/pubmed/27996965
http://dx.doi.org/10.1038/ncomms13654
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author Holdgraf, Christopher R.
de Heer, Wendy
Pasley, Brian
Rieger, Jochem
Crone, Nathan
Lin, Jack J.
Knight, Robert T.
Theunissen, Frédéric E.
author_facet Holdgraf, Christopher R.
de Heer, Wendy
Pasley, Brian
Rieger, Jochem
Crone, Nathan
Lin, Jack J.
Knight, Robert T.
Theunissen, Frédéric E.
author_sort Holdgraf, Christopher R.
collection PubMed
description Experience shapes our perception of the world on a moment-to-moment basis. This robust perceptual effect of experience parallels a change in the neural representation of stimulus features, though the nature of this representation and its plasticity are not well-understood. Spectrotemporal receptive field (STRF) mapping describes the neural response to acoustic features, and has been used to study contextual effects on auditory receptive fields in animal models. We performed a STRF plasticity analysis on electrophysiological data from recordings obtained directly from the human auditory cortex. Here, we report rapid, automatic plasticity of the spectrotemporal response of recorded neural ensembles, driven by previous experience with acoustic and linguistic information, and with a neurophysiological effect in the sub-second range. This plasticity reflects increased sensitivity to spectrotemporal features, enhancing the extraction of more speech-like features from a degraded stimulus and providing the physiological basis for the observed ‘perceptual enhancement' in understanding speech.
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spelling pubmed-51874452017-01-03 Rapid tuning shifts in human auditory cortex enhance speech intelligibility Holdgraf, Christopher R. de Heer, Wendy Pasley, Brian Rieger, Jochem Crone, Nathan Lin, Jack J. Knight, Robert T. Theunissen, Frédéric E. Nat Commun Article Experience shapes our perception of the world on a moment-to-moment basis. This robust perceptual effect of experience parallels a change in the neural representation of stimulus features, though the nature of this representation and its plasticity are not well-understood. Spectrotemporal receptive field (STRF) mapping describes the neural response to acoustic features, and has been used to study contextual effects on auditory receptive fields in animal models. We performed a STRF plasticity analysis on electrophysiological data from recordings obtained directly from the human auditory cortex. Here, we report rapid, automatic plasticity of the spectrotemporal response of recorded neural ensembles, driven by previous experience with acoustic and linguistic information, and with a neurophysiological effect in the sub-second range. This plasticity reflects increased sensitivity to spectrotemporal features, enhancing the extraction of more speech-like features from a degraded stimulus and providing the physiological basis for the observed ‘perceptual enhancement' in understanding speech. Nature Publishing Group 2016-12-20 /pmc/articles/PMC5187445/ /pubmed/27996965 http://dx.doi.org/10.1038/ncomms13654 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Holdgraf, Christopher R.
de Heer, Wendy
Pasley, Brian
Rieger, Jochem
Crone, Nathan
Lin, Jack J.
Knight, Robert T.
Theunissen, Frédéric E.
Rapid tuning shifts in human auditory cortex enhance speech intelligibility
title Rapid tuning shifts in human auditory cortex enhance speech intelligibility
title_full Rapid tuning shifts in human auditory cortex enhance speech intelligibility
title_fullStr Rapid tuning shifts in human auditory cortex enhance speech intelligibility
title_full_unstemmed Rapid tuning shifts in human auditory cortex enhance speech intelligibility
title_short Rapid tuning shifts in human auditory cortex enhance speech intelligibility
title_sort rapid tuning shifts in human auditory cortex enhance speech intelligibility
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5187445/
https://www.ncbi.nlm.nih.gov/pubmed/27996965
http://dx.doi.org/10.1038/ncomms13654
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