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Dynamic Increase in Corticomuscular Coherence during Bilateral, Cyclical Ankle Movements

In humans, the midline primary motor cortex is active during walking. However, the exact role of such cortical participation is unknown. To delineate the role of the primary motor cortex in walking, we examined whether the primary motor cortex would activate leg muscles during movements that retaine...

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Autores principales: Yoshida, Takashi, Masani, Kei, Zabjek, Karl, Chen, Robert, Popovic, Milos R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5378765/
https://www.ncbi.nlm.nih.gov/pubmed/28420971
http://dx.doi.org/10.3389/fnhum.2017.00155
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author Yoshida, Takashi
Masani, Kei
Zabjek, Karl
Chen, Robert
Popovic, Milos R.
author_facet Yoshida, Takashi
Masani, Kei
Zabjek, Karl
Chen, Robert
Popovic, Milos R.
author_sort Yoshida, Takashi
collection PubMed
description In humans, the midline primary motor cortex is active during walking. However, the exact role of such cortical participation is unknown. To delineate the role of the primary motor cortex in walking, we examined whether the primary motor cortex would activate leg muscles during movements that retained specific requirements of walking (i.e., locomotive actions). We recorded electroencephalographic and electromyographic signals from 15 healthy, young men while they sat and performed bilateral, cyclical ankle movements. During dorsiflexion, near-20-Hz coherence increased cyclically between the midline primary motor cortex and the co-contracting antagonistic pair (i.e., tibialis anterior and medial gastrocnemius muscles) in both legs. Thus, we have shown that dynamic increase in corticomuscular coherence, which has been observed during walking, also occurs during simple bilateral cyclical movements of the feet. A possible mechanism for such coherence is corticomuscular communication, in which the primary motor cortex participates in the control of movement. Furthermore, because our experimental task isolated certain locomotive actions, the observed coherence suggests that the human primary motor cortex may participate in these actions (i.e., maintaining a specified movement frequency, bilaterally coordinating the feet, and stabilizing the posture of the feet). Additional studies are needed to identify the exact cortical and subcortical interactions that cause corticomuscular coherence and to further delineate the functional role of the primary motor cortex during bilateral cyclical movements such as walking.
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spelling pubmed-53787652017-04-18 Dynamic Increase in Corticomuscular Coherence during Bilateral, Cyclical Ankle Movements Yoshida, Takashi Masani, Kei Zabjek, Karl Chen, Robert Popovic, Milos R. Front Hum Neurosci Neuroscience In humans, the midline primary motor cortex is active during walking. However, the exact role of such cortical participation is unknown. To delineate the role of the primary motor cortex in walking, we examined whether the primary motor cortex would activate leg muscles during movements that retained specific requirements of walking (i.e., locomotive actions). We recorded electroencephalographic and electromyographic signals from 15 healthy, young men while they sat and performed bilateral, cyclical ankle movements. During dorsiflexion, near-20-Hz coherence increased cyclically between the midline primary motor cortex and the co-contracting antagonistic pair (i.e., tibialis anterior and medial gastrocnemius muscles) in both legs. Thus, we have shown that dynamic increase in corticomuscular coherence, which has been observed during walking, also occurs during simple bilateral cyclical movements of the feet. A possible mechanism for such coherence is corticomuscular communication, in which the primary motor cortex participates in the control of movement. Furthermore, because our experimental task isolated certain locomotive actions, the observed coherence suggests that the human primary motor cortex may participate in these actions (i.e., maintaining a specified movement frequency, bilaterally coordinating the feet, and stabilizing the posture of the feet). Additional studies are needed to identify the exact cortical and subcortical interactions that cause corticomuscular coherence and to further delineate the functional role of the primary motor cortex during bilateral cyclical movements such as walking. Frontiers Media S.A. 2017-04-04 /pmc/articles/PMC5378765/ /pubmed/28420971 http://dx.doi.org/10.3389/fnhum.2017.00155 Text en Copyright © 2017 Yoshida, Masani, Zabjek, Chen and Popovic. http://creativecommons.org/licenses/by/4.0/ 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 Neuroscience
Yoshida, Takashi
Masani, Kei
Zabjek, Karl
Chen, Robert
Popovic, Milos R.
Dynamic Increase in Corticomuscular Coherence during Bilateral, Cyclical Ankle Movements
title Dynamic Increase in Corticomuscular Coherence during Bilateral, Cyclical Ankle Movements
title_full Dynamic Increase in Corticomuscular Coherence during Bilateral, Cyclical Ankle Movements
title_fullStr Dynamic Increase in Corticomuscular Coherence during Bilateral, Cyclical Ankle Movements
title_full_unstemmed Dynamic Increase in Corticomuscular Coherence during Bilateral, Cyclical Ankle Movements
title_short Dynamic Increase in Corticomuscular Coherence during Bilateral, Cyclical Ankle Movements
title_sort dynamic increase in corticomuscular coherence during bilateral, cyclical ankle movements
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5378765/
https://www.ncbi.nlm.nih.gov/pubmed/28420971
http://dx.doi.org/10.3389/fnhum.2017.00155
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