介绍用可编程计数器8253集成芯片产生生理实验中所需要的各种电刺激波形。

This article introduced that the 8253 integrated chip of programmable counter generates kinds of waveforms for electronic stimulus needed in the physiological experiment.

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日常生活功能量表评分结果与P300部分靶刺激潜伏期和P4波出现率呈正相关，而与靶刺激波幅呈负相关（P<0.05～0.01）。

The FLS scores were correlated positively with the latency of partial target stimulation and ratio of target P4 of P300, but negatively with the amplitudes(P< 0.05 to 0.01).

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