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.

journal_name

J Mot Behav

authors

Jensen P,Frisk R,Spedden ME,Geertsen SS,Bouyer LJ,Halliday DM,Nielsen JB

doi

10.1080/00222895.2018.1563762

subject

Has Abstract

pub_date

2019-01-01 00:00:00

pages

668-680

issue

6

eissn

0022-2895

issn

1940-1027

journal_volume

51

pub_type

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