Beta Band Corticomuscular Drive Reflects Muscle Coordination Strategies

摘要: During force production, hand muscle activity is known to be coherent with in primary motor cortex, specifically the beta-band (15-30 Hz) frequency range. It not clear, however, if this coherence reflects control strategy selected by nervous system for a given task, or it instead an intrinsic property of cortico-spinal communication. Here, we measured corticomuscular and intermuscular between muscles index finger thumb while two-finger pinch grip identical net was applied objects which were either stable (allowing synergistic activation muscles) unstable (requiring individuated control). We found that FDI APB muscles, as well their each other, significantly reduced when required. interpret these findings show reflective cortex binds task-related neurons into functional units.