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目的了解不同类型刺激对健康老年及青少年的事件相关电位（ＥＲＰ）的影响。方法对６０名青少年及４７名老年健康志愿者做单音、图像及汉字结构识别视觉刺激的ＥＲＰ研究。结果１、外源性成分的比较：（１）单音：男性及女性的Ｐ２ＰＬ均是老年组长于青少年组（Ｐ＜０．０５）；（２）图像：男性Ｆｚ、Ｃｚ部位的Ｎ１ＰＬ和女性Ｐ２ＰＬ均是老年组短于青少年组（Ｐ＜０．０５）；（３）汉字结构：男性Ｐ２ＰＬ和女性Ｎ１、Ｐ２ＰＬ老年组短于青少年组（Ｐ＜０．０５）。２、内源性成分及ＲＴ的比较：（１）单音：男性及女性Ｎ２、Ｐ３ＰＬ及ＲＴ均是老年组长于青少年组（Ｐ＜０．０５）；（２）图像：男性Ｎ２ＰＬ及Ｃ３、Ｐｚ部位的Ｐ３ＰＬ、ＲＴ和女性Ｐ３ＰＬ及ＲＴ，老年组长于青少年组（Ｐ＜０．０５）；（３）汉字结构：男性Ｐ３ＰＬ及ＲＴ，老年组长于青少年组（Ｐ＜０．０５），女性Ｆｚ部位的Ｎ２ＰＬ，老年组短于青少年组（Ｐ＜０．０５）；Ｐ３ＰＬ及ＲＴ，老年组长于青少年组（Ｐ＜０．０５）。结论ＥＲＰ的性别差异及年龄差异随刺激的不同而变化。
Objective To understand the effects of different types of stimuli on event-related potentials (ERPs) in healthy elderly and adolescents. Methods Sixty adolescents and 47 elderly healthy volunteers were used to make ERP studies of visual stimulation of mono, image and Chinese character structure recognition. (1) Mono tone: Both male and female P2PLs were older than adolescent group (P <0.05); (2) Image: N1PL and female with male Fz and Cz P2PL was shorter in the elderly group than in the adolescent group (P <0.05). (3) Chinese characters structure: male P2PL and female N1, P2PL elderly group was shorter than adolescent group (P <0.05). (1) Mono: N2 N2, P3PL and RT in male and female were all older group than in adolescent group (P <0.05); (2) Image: Male N2PL and C3, (P <0.05); (3) Chinese character structure: male P3PL and RT, the elderly group leader in the adolescent group (P <0.05), female The N2PL in Fz was shorter in the elderly group than in the adolescent group (P <0.05). P3PL and RT, the older group were longer in the adolescent group (P <0.05). Conclusion The gender difference and age difference of ERP vary with the stimulus.