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

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

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.

OriginalsprogEngelsk
TidsskriftJournal of Motor Behavior
Vol/bind51
Udgave nummer6
Sider (fra-til)668-680
Antal sider13
ISSN0022-2895
DOI
StatusUdgivet - 2019

Bibliografisk note

CURIS 2019 NEXS 028

ID: 212123310