Neuroimage Clin 2021 Sep 2;32:102818. Epub 2021 Sep 2.
Department of Neuroscience and Biomedical Engineering, Aalto University School of Science, P.O. Box 12200, 00760 AALTO, Espoo, Finland; Aalto NeuroImaging, Aalto University School of Science, P.O. Box 12200, 00760 AALTO, Espoo, Finland; Department of Neurology, Helsinki University Hospital and Clinical Neurosciences, Neurology, University of Helsinki, P.O. Box 340, 00029 HUS, Helsinki, Finland.
In healthy subjects, motor cortex activity and electromyographic (EMG) signals from contracting contralateral muscle show coherence in the beta (15-30 Hz) range. Corticomuscular coherence (CMC) is considered a sign of functional coupling between muscle and brain. Based on prior studies, CMC is altered in stroke, but functional significance of this finding has remained unclear. Read More