In order to study electrophsiological alterations of cognitive impairment in patients with parkinson disease(PD),We analysed event-related potential(ERP) in 32 nondemented PD patients,30demented PD patients and 28 control subjects.

• 为探讨帕金森病（PD）患者认识功能障碍的电生理改变，分别对32例PD非痴呆患者，30例PD痴呆患者及28例健康人的事件相关电位（ERP）进行了分析。