Using corticomuscular and intermuscular coherence to assess cortical contribution to ankle plantar flexor activity during gait

Peter Jensen; Rasmus Frisk; Meaghan Elizabeth Spedden; Svend Sparre Geertsen; Laurent J Bouyer; David M Halliday; Jens Bo Nielsen

doi:10.1080/00222895.2018.1563762

Using corticomuscular and intermuscular coherence to assess cortical contribution to ankle plantar flexor activity during gait

Peter Jensen^*, Rasmus Frisk, Meaghan Elizabeth Spedden, Svend Sparre Geertsen, Laurent J Bouyer, David M Halliday, Jens Bo Nielsen

^*Corresponding author af dette arbejde

11 Citationer (Scopus)

Abstract

The present study used coherence and directionality analyses to explore whether the motor cortex contributes to plantar flexor muscle activity during the stance phase and push-off phase during gait. Subjects walked on a treadmill, while EEG over the leg motorcortex area and EMG from the medial gastrocnemius and soleus muscles was recorded. Corticomuscular and intermuscular coherence were calculated from pair-wise recordings. Significant EEG-EMG and EMG-EMG coherence in the beta and gamma frequency bands was found throughout the stance phase with the largest coherence towards push-off. Analysis of directionality revealed that EEG activity preceded EMG activity throughout the stance phase until the time of push-off. These findings suggest that the motor cortex contributes to ankle plantar flexor muscle activity and forward propulsion during gait.

Originalsprog	Engelsk
Tidsskrift	Journal of Motor Behavior
Vol/bind	51
Udgave nummer	6
Sider (fra-til)	668-680
Antal sider	13
ISSN	0022-2895
DOI	https://doi.org/10.1080/00222895.2018.1563762
Status	Udgivet - 2019

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Det Natur- og Biovidenskabelige Fakultet

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10.1080/00222895.2018.1563762

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title = "Using corticomuscular and intermuscular coherence to assess cortical contribution to ankle plantar flexor activity during gait",

abstract = "The present study used coherence and directionality analyses to explore whether the motor cortex contributes to plantar flexor muscle activity during the stance phase and push-off phase during gait. Subjects walked on a treadmill, while EEG over the leg motorcortex area and EMG from the medial gastrocnemius and soleus muscles was recorded. Corticomuscular and intermuscular coherence were calculated from pair-wise recordings. Significant EEG-EMG and EMG-EMG coherence in the beta and gamma frequency bands was found throughout the stance phase with the largest coherence towards push-off. Analysis of directionality revealed that EEG activity preceded EMG activity throughout the stance phase until the time of push-off. These findings suggest that the motor cortex contributes to ankle plantar flexor muscle activity and forward propulsion during gait.",

keywords = "Faculty of Science, Coherence, Gait, EMG, Cortex, Spinal motor neurons, Directionality",

author = "Peter Jensen and Rasmus Frisk and Spedden, {Meaghan Elizabeth} and Geertsen, {Svend Sparre} and Bouyer, {Laurent J} and Halliday, {David M} and Nielsen, {Jens Bo}",

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T1 - Using corticomuscular and intermuscular coherence to assess cortical contribution to ankle plantar flexor activity during gait

AU - Jensen, Peter

AU - Frisk, Rasmus

AU - Spedden, Meaghan Elizabeth

AU - Geertsen, Svend Sparre

AU - Bouyer, Laurent J

AU - Halliday, David M

AU - Nielsen, Jens Bo

N1 - CURIS 2019 NEXS 028

PY - 2019

Y1 - 2019

N2 - The present study used coherence and directionality analyses to explore whether the motor cortex contributes to plantar flexor muscle activity during the stance phase and push-off phase during gait. Subjects walked on a treadmill, while EEG over the leg motorcortex area and EMG from the medial gastrocnemius and soleus muscles was recorded. Corticomuscular and intermuscular coherence were calculated from pair-wise recordings. Significant EEG-EMG and EMG-EMG coherence in the beta and gamma frequency bands was found throughout the stance phase with the largest coherence towards push-off. Analysis of directionality revealed that EEG activity preceded EMG activity throughout the stance phase until the time of push-off. These findings suggest that the motor cortex contributes to ankle plantar flexor muscle activity and forward propulsion during gait.

AB - The present study used coherence and directionality analyses to explore whether the motor cortex contributes to plantar flexor muscle activity during the stance phase and push-off phase during gait. Subjects walked on a treadmill, while EEG over the leg motorcortex area and EMG from the medial gastrocnemius and soleus muscles was recorded. Corticomuscular and intermuscular coherence were calculated from pair-wise recordings. Significant EEG-EMG and EMG-EMG coherence in the beta and gamma frequency bands was found throughout the stance phase with the largest coherence towards push-off. Analysis of directionality revealed that EEG activity preceded EMG activity throughout the stance phase until the time of push-off. These findings suggest that the motor cortex contributes to ankle plantar flexor muscle activity and forward propulsion during gait.

KW - Faculty of Science

KW - Coherence

KW - Gait

KW - EMG

KW - Cortex

KW - Spinal motor neurons

KW - Directionality

U2 - 10.1080/00222895.2018.1563762

DO - 10.1080/00222895.2018.1563762

M3 - Journal article

C2 - 30657030

SN - 0022-2895

VL - 51

SP - 668

EP - 680

JO - Journal of Motor Behavior

JF - Journal of Motor Behavior

IS - 6

ER -

Using corticomuscular and intermuscular coherence to assess cortical contribution to ankle plantar flexor activity during gait

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