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

TY - JOUR

T1 - Using corticomuscular and intermuscular coherence to assess cortical contribution to ankle plantar flexor activity during gait

AU - Jensen, Peter

AU - Frisk, Rasmus

AU - Spedden, Meaghan Elizabeth

AU - Geertsen, Svend Sparre

AU - Bouyer, Laurent J

AU - Halliday, David M

AU - Nielsen, Jens Bo

N1 - CURIS 2019 NEXS 028

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

KW - Faculty of Science

KW - Coherence

KW - Gait

KW - EMG

KW - Cortex

KW - Spinal motor neurons

KW - Directionality

U2 - 10.1080/00222895.2018.1563762

DO - 10.1080/00222895.2018.1563762

M3 - Journal article

C2 - 30657030

SN - 0022-2895

VL - 51

SP - 668

EP - 680

JO - Journal of Motor Behavior

JF - Journal of Motor Behavior

IS - 6

ER -