Corticomuscular Coherence as Neurorehabilitation Assessment

Abstract

Corticomuscular coherence (CMC) is the correlation between electroencephalography (EEG), magnetoencephalography (MEG), and electromyography (EMG) and is a neurophysiological indicator that reflects functional connectivity between the brain and muscle. This indicator includes both descending (such as motor commands) and ascending (such as sensory inputs) information transmission. Therefore, the relationship between motor control and CMC and changes in CMC due to motor learning were examined. During neurorehabilitation, interventions often aim to promote motor learning and acquire motor control, making CMC a useful tool in neurorehabilitation. This review provides an overview of CMC based on basic and applied clinical research, facilitating its use as a neurophysiological assessment method for neurorehabilitation.