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对３０位神经系统正常、精神活动完整的老年人同时进行视觉、听觉、体感不同刺激模式检测得到的事件相关电位（ＥＲＰ）进行比较分析，结果提示不同的刺激模式诱发出来的ＥＲＰ各波的潜伏期、波幅、波型是不同的。如视觉刺激时Ｐ３波潜伏期为４００．７４±２６．５２ｍｓ，波幅为８．３５±４．９６μｖ；听觉刺激时Ｐ３波潜伏期为３３９．５２±２３．９０ｍｓ，波幅为８．４０±５．４３μｖ；体感刺激时Ｐ３波潜伏期为３４６．２±３５．１ｍｓ，波幅为８．５６±２．１４μｖ。并对不同刺激模式的最佳记录部位和产生机制进行初步讨论。
Thirty neurons in the normal nervous system, the elderly with complete mental activity at the same time visual, auditory and somatosensory different stimulus patterns detected event-related potentials (ERP) were compared and analyzed, the results suggest that different stimulation patterns induced ERP wave latency Volatility, wave pattern is different. Such as visual stimulation P3 wave latency of 400.74 ± 26.52ms, amplitude of 8.35 ± 4.96μv; P3 when the auditory stimulation latency of 339.52 ± 23.90ms, amplitude 8.40 ± 5.43μv ; Somatosensory stimulation P3 wave latency of 346.2 ± 35.1ms, amplitude of 8.56 ± 2.14μv. And the best record of different stimulus patterns and mechanism for the initial discussion.