Abstract: Objective To explore event-related potential(ERP) P300 of cerebral infarction patients during motor relearning program. Methods 99 cerebral infarction patients were divided into observation group(52 cases, receiving motor relearning program) and control group(47 cases, no treatment), and 50 healthy subjects as normal control. After 12 weeks, they were measured by: 1)Berg balance scale; 2)Sheikh body control scale; 3)Fugl-Meyer movement assessment; 4) walk ability and 5) ERP P300.Results The scores of Berg balance scale, Fugl-Meyer movement assessment, Sheikh body control scale and walk ability scale increased significantly, and the latency of ERP P300 decreased significantly(P<0.01), and the amplitude of ERP P300 increased significantly in the observation group. ERP P300 of the observation group has significantly difference(P<0.01) from the normal control group.Conclusion Motor relearning program can effectively retrieve the ERP P300 and motor ability of cerebral infarction patients.

Key words: motor relearning program, cerebral infarction, motor ability, event-related potential(ERP)