摘要
幼儿事件相关电位（ＥＲＰ）对研究儿童心理发展有重要意义，因试验难度大，国内外至今未见报道。本研究以４～５岁幼儿为研究对象，用母亲照片和陌生女人照片按一定概率编排成刺激序列，分别在三个试验中成功诱发ＥＲＰ。结果证明幼儿Ｐ３平均潜伏期符合成人Ｐ３定义范围；幼儿Ｐ３潜伏期Ｆｚ长于Ｐｚ、Ｏｚ；无任务Ｐ３潜伏期短于任务Ｐ３；高度选择注意时Ｐ３潜伏期长；再认母亲与再认指定陌生人照片Ｐ３潜伏期无显著差异，是幼儿记忆发育良好的表现。反应时间长于Ｐ３潜伏期可以做为幼儿思维支配行为的佐证。
Abstract Event-related potential(ERP)is important in the study on the psychophysiological development in children. However the report concerned is scanty because of its difficulty. Present study on ERP was successfully done in 4-5 yea rold children by using the photos of their mothers and strange women based on the stunulus paradigm composed by certain possibilities. The results showed that the average Ps latency in children was identical with that in adult,P3 latency in Fz was.longer than that in Pz and Oz, and the latency of non-task was shorter than that of the task, while P3 latency was incteased in high level of elective attention. There was no significant difference between recognizing the mother and the given strange woman indicating that the memory development of the children was sound. It was believed that the reaction time longer than P3 latency could be regarded as a adjuvant evidence of the action of ideological control in children.
