Time-course analysis of motor unit firing patterns in stroke patients using noninvasive multielectrode electromyography

The aim of this research is to apply the surface motor unit action potentials (MUAPs) measured with noninvasive multielectrode for study the motor control ability for paretic limb in stroke patients. To investigate the firing rate variation, the measure of joint interval histogram (JIH), derived from normalized interpulse interval (IPI) train, were adopted in this research. With the limited clinical cases, the JIH parameters are only appropriate for intra-subject comparison for affected and unaffected sides. In addition, MU activities of the affected side measured from acute to stable stages were evaluated for clinical time-course study.