Satisfactory BTEP waveforms were recorded in all of 50 subjects. The values of peak latency and interpeak latency were approximate to the values of literatures.
结果：50例正常人均记录到满意的BTEP反应波，其峰潜伏期、波间期值与文献资料近似。
In each group, the N1 wave and P1 wave amplitude density were higher and peak latency was longer in the upper retina than in the lower, there was no difference between nasal and temporal retina.
各组上半视网膜n 1、P 1波较下方振幅密度降低、潜伏期延长，存在统计学差异，鼻颞侧视网膜反应差异无显著性。
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.
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。
S2 peak-peak size and latency had no statistical changes;
S2的峰-峰值和潜伏期变化不显著；
S2 peak-peak size and latency had no statistical changes;
S2的峰-峰值和潜伏期变化不显著；
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