Department of Psychology, Hunan Normal University, Changsha 410081, China.
Neurosci Lett. 2011 Nov 21;505(3):233-7. doi: 10.1016/j.neulet.2011.10.017. Epub 2011 Oct 13.
The present study explored the neural correlates underlying the psychological processing of self-national flag. Event-related potentials were recorded for national flags while subjects performed a three-stimulus oddball task. The results showed that self-referential stimulus (self-national flag) elicited longer N1 latency and larger N2 amplitude than did non-self-referential stimuli (the familiar and unfamiliar flags). Furthermore, larger P3 amplitudes were showed for self-referential stimulus than for familiar and unfamiliar stimuli. Moreover, in terms of lateralization, the self-referential effect was more obvious on the left region sites. Thus, the present study showed that the self-referential effect not only occurred in late P3 processing stage, but also in early N1 and N2 processing stages, and further demonstrated a left laterality for self-referential processing by using the self-national flag as the self-relevant stimulus.
本研究探讨了自我国旗心理加工的神经基础。当被试进行三刺激Oddball 任务时，记录了国旗的事件相关电位。结果表明，自我参照刺激（自我国旗）比非自我参照刺激（熟悉和不熟悉的国旗）诱发更长的 N1 潜伏期和更大的 N2 振幅。此外，自我参照刺激比熟悉和不熟悉的刺激表现出更大的 P3 振幅。此外，就侧化而言，自我参照效应在左侧区域更为明显。因此，本研究表明，自我参照效应不仅发生在晚期 P3 处理阶段，而且发生在早期 N1 和 N2 处理阶段，并进一步通过使用自我国旗作为自我相关刺激，证明了自我参照处理的左侧偏侧性。
