Using Corticomuscular and Intermuscular Coherence to Assess Cortical Contribution to Ankle Plantar Flexor Activity During Gait.

TitleUsing Corticomuscular and Intermuscular Coherence to Assess Cortical Contribution to Ankle Plantar Flexor Activity During Gait.
Publication TypeJournal Article
Year of Publication2019
AuthorsJensen, P, Frisk, R, Spedden, MElizabeth, Geertsen, SSparre, Bouyer, LJ, Halliday, DM, Nielsen, JBo
JournalJ Mot Behav
Pagination1-13
Date Published2019 Jan 18
ISSN1940-1027
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.

DOI10.1080/00222895.2018.1563762
Alternate JournalJ Mot Behav
PubMed ID30657030