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Dynamic modulation of shared sensory and motor cortical rhythms mediates speech and non-speech discrimination performance

Oscillatory models of speech processing have proposed that rhythmic cortical oscillations in sensory and motor regions modulate speech sound processing from the bottom-up via phase reset at low frequencies (3–10 Hz) and from the top-down via the disinhibition of alpha/beta rhythms (8–30 Hz). To inve...

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Autores principales: Bowers, Andrew L., Saltuklaroglu, Tim, Harkrider, Ashley, Wilson, Matt, Toner, Mary A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4019855/
https://www.ncbi.nlm.nih.gov/pubmed/24847290
http://dx.doi.org/10.3389/fpsyg.2014.00366
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author Bowers, Andrew L.
Saltuklaroglu, Tim
Harkrider, Ashley
Wilson, Matt
Toner, Mary A.
author_facet Bowers, Andrew L.
Saltuklaroglu, Tim
Harkrider, Ashley
Wilson, Matt
Toner, Mary A.
author_sort Bowers, Andrew L.
collection PubMed
description Oscillatory models of speech processing have proposed that rhythmic cortical oscillations in sensory and motor regions modulate speech sound processing from the bottom-up via phase reset at low frequencies (3–10 Hz) and from the top-down via the disinhibition of alpha/beta rhythms (8–30 Hz). To investigate how the proposed rhythms mediate perceptual performance, electroencephalographic (EEG) was recorded while participants passively listened to or actively identified speech and tone-sweeps in a two-force choice in noise discrimination task presented at high and low signal-to-noise ratios. EEG data were decomposed using independent component analysis and clustered across participants using principle component methods in EEGLAB. Left and right hemisphere sensorimotor and posterior temporal lobe clusters were identified. Alpha and beta suppression was associated with active tasks only in sensorimotor and temporal clusters. In posterior temporal clusters, increases in phase reset at low frequencies were driven by the quality of bottom-up acoustic information for speech and non-speech stimuli, whereas phase reset in sensorimotor clusters was associated with top-down active task demands. A comparison of correct discrimination trials to those identified at chance showed an earlier performance related effect for the left sensorimotor cluster relative to the left-temporal lobe cluster during the syllable discrimination task only. The right sensorimotor cluster was associated with performance related differences for tone–sweep stimuli only. Findings are consistent with internal model accounts suggesting that early efferent sensorimotor models transmitted along alpha and beta channels reflect a release from inhibition related to active attention to auditory discrimination. Results are discussed in the broader context of dynamic, oscillatory models of cognition proposing that top-down internally generated states interact with bottom-up sensory processing to enhance task performance.
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spelling pubmed-40198552014-05-20 Dynamic modulation of shared sensory and motor cortical rhythms mediates speech and non-speech discrimination performance Bowers, Andrew L. Saltuklaroglu, Tim Harkrider, Ashley Wilson, Matt Toner, Mary A. Front Psychol Psychology Oscillatory models of speech processing have proposed that rhythmic cortical oscillations in sensory and motor regions modulate speech sound processing from the bottom-up via phase reset at low frequencies (3–10 Hz) and from the top-down via the disinhibition of alpha/beta rhythms (8–30 Hz). To investigate how the proposed rhythms mediate perceptual performance, electroencephalographic (EEG) was recorded while participants passively listened to or actively identified speech and tone-sweeps in a two-force choice in noise discrimination task presented at high and low signal-to-noise ratios. EEG data were decomposed using independent component analysis and clustered across participants using principle component methods in EEGLAB. Left and right hemisphere sensorimotor and posterior temporal lobe clusters were identified. Alpha and beta suppression was associated with active tasks only in sensorimotor and temporal clusters. In posterior temporal clusters, increases in phase reset at low frequencies were driven by the quality of bottom-up acoustic information for speech and non-speech stimuli, whereas phase reset in sensorimotor clusters was associated with top-down active task demands. A comparison of correct discrimination trials to those identified at chance showed an earlier performance related effect for the left sensorimotor cluster relative to the left-temporal lobe cluster during the syllable discrimination task only. The right sensorimotor cluster was associated with performance related differences for tone–sweep stimuli only. Findings are consistent with internal model accounts suggesting that early efferent sensorimotor models transmitted along alpha and beta channels reflect a release from inhibition related to active attention to auditory discrimination. Results are discussed in the broader context of dynamic, oscillatory models of cognition proposing that top-down internally generated states interact with bottom-up sensory processing to enhance task performance. Frontiers Media S.A. 2014-05-07 /pmc/articles/PMC4019855/ /pubmed/24847290 http://dx.doi.org/10.3389/fpsyg.2014.00366 Text en Copyright © 2014 Bowers, Saltuklaroglu, Harkrider, Wilson and Toner. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Psychology
Bowers, Andrew L.
Saltuklaroglu, Tim
Harkrider, Ashley
Wilson, Matt
Toner, Mary A.
Dynamic modulation of shared sensory and motor cortical rhythms mediates speech and non-speech discrimination performance
title Dynamic modulation of shared sensory and motor cortical rhythms mediates speech and non-speech discrimination performance
title_full Dynamic modulation of shared sensory and motor cortical rhythms mediates speech and non-speech discrimination performance
title_fullStr Dynamic modulation of shared sensory and motor cortical rhythms mediates speech and non-speech discrimination performance
title_full_unstemmed Dynamic modulation of shared sensory and motor cortical rhythms mediates speech and non-speech discrimination performance
title_short Dynamic modulation of shared sensory and motor cortical rhythms mediates speech and non-speech discrimination performance
title_sort dynamic modulation of shared sensory and motor cortical rhythms mediates speech and non-speech discrimination performance
topic Psychology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4019855/
https://www.ncbi.nlm.nih.gov/pubmed/24847290
http://dx.doi.org/10.3389/fpsyg.2014.00366
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