Title | Using Corticomuscular and Intermuscular Coherence to Assess Cortical Contribution to Ankle Plantar Flexor Activity During Gait. |
Publication Type | Journal Article |
Year of Publication | 2019 |
Authors | Jensen, P, Frisk, R, Spedden, MElizabeth, Geertsen, SSparre, Bouyer, LJ, Halliday, DM, Nielsen, JBo |
Journal | J Mot Behav |
Pagination | 1-13 |
Date Published | 2019 Jan 18 |
ISSN | 1940-1027 |
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. |
DOI | 10.1080/00222895.2018.1563762 |
Alternate Journal | J Mot Behav |
PubMed ID | 30657030 |