目的：评价事件相关电位P 300作为血管性痴呆患者认知功能障碍客观指征的临床价值。

AIM: To evaluate the clinical value of event related potential P300 as assessment of cognitive function disorder in the patients with vascular dementia (VD).

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此外，学习和记忆功能障碍还是诸多脑部疾病和全身性疾病的一种症状，认知功能障碍严重者可出现痴呆。

In addition, learning and memory deficit is a symptom of many encephalopathy and general diseases, the patients with serious cognition deficit occur dementia.

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结论：血管性痴呆患者P 300峰潜伏时的延长反映与认知功能相关脑区的病理改变，客观反映认知功能障碍程度。

CONCLUSION: the prolongation of P300 peak latency reflects the pathological changes of brain areas associated with cognitive function and the degree of cognitive function disorder in VD patients.

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