Using corticomuscular and intermuscular coherence to assess cortical contribution to ankle plantar flexor activity during gait
Research output: Contribution to journal › Journal article › Research › peer-review
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||Journal of Motor Behavior|
|Publication status||E-pub ahead of print - 18 Jan 2019|
- The Faculty of Science - Coherence, Gait, EMG, Cortex, Spinal motor neurons, Directionality