Key Laboratory of Cognition and Personality (SWU), Ministry of Education, School of Psychology, Southwest University (SWU), Chongqing 400715, China.
Biol Psychol. 2010 Oct;85(2):219-25. doi: 10.1016/j.biopsycho.2010.07.004. Epub 2010 Jul 14.
Event-related potentials (ERPs) were recorded to explore the electrophysiological correlates of self-referencial processing when subjects were asked to judge whether the stimuli (their hands) were their own or not. ERP results showed that: first, own hand elicited a greater positive component (P350-500) than did other hand in the time window of 350-500 ms, and the generator of P350-500 was localized in the anterior cingulate cortex (ACC), which might be related to retrieval and identification of self-referencial information due to their sensitivity to self-hand. Second, own hand elicited a more positive component (LPC) than did other hand in the later time window. Dipole analysis revealed that the generators were localized in the parahippocampal gyrus and the medial frontal gyrus, which might be involved in making a self-referencial decision based on retrieval of self-hand information.
事件相关电位（ERPs）被记录下来，以探索当被试被要求判断刺激（他们的手）是否为自己的手时，自我参照加工的电生理相关性。ERP 结果表明：首先，在 350-500ms 的时间窗口内，自己的手比其他手诱发了更大的正成分（P350-500），而 P350-500 的产生源位于前扣带皮层（ACC），这可能与自我参照信息的检索和识别有关，因为它们对手的自我识别很敏感。其次，在较晚的时间窗口内，自己的手比其他手诱发了更大的正成分（LPC）。偶极子分析表明，产生源位于海马旁回和内侧额回，这可能涉及基于对手的自我信息检索做出自我参照决策。
