Research Center for Psychological Development and Education, Liaoning Normal University, Liaoning 116029, China.
Neurosci Lett. 2013 Feb 22;535:30-4. doi: 10.1016/j.neulet.2012.11.061. Epub 2013 Jan 8.
Behavioral studies have suggested that the individual self is primary in self-conception as compared to the collective self. The aim of the present investigation was to further investigate the primacy of the individual self versus the collective self at neurophysiologic levels. In the present study, event-related potentials (ERPs) to three types of experimental stimuli (individual self-relevant, collective self-relevant and non-self-relevant stimuli) were recorded while subjects performed a three-stimulus oddball task. The results showed that larger P2 amplitudes were evoked by individual self-relevant and collective self-relevant stimuli than by non-self-relevant stimuli, and that there was no P2 amplitude difference observed between individual self-relevant and collective self-relevant stimuli. Furthermore, N2 amplitudes evoked by individual self-relevant stimuli were smaller than those evoked by collective self-relevant and non-self-relevant stimuli, and no difference was observed in N2 amplitudes between collective self-relevant and non-self-relevant stimuli. Moreover, individual self-relevant stimuli elicited larger P3 amplitudes than did collective self-relevant stimuli, which, in turn, elicited larger P3 amplitudes than did non-self-relevant stimuli. In summary, in addition to finding a classic self-relevant effect at the early P2 processing stage, the present study demonstrates the primacy of the individual self versus the collective self at the N2 and P3 processing stages.
行为研究表明，与集体自我相比，个体自我在自我概念中更为重要。本研究旨在进一步从神经生理水平上探讨个体自我与集体自我的优先性。在本研究中，当被试执行三刺激Oddball 任务时，记录了三种实验刺激（个体自我相关刺激、集体自我相关刺激和非自我相关刺激）的事件相关电位（ERP）。结果表明，个体自我相关刺激和集体自我相关刺激引起的 P2 振幅大于非自我相关刺激引起的 P2 振幅，且个体自我相关刺激和集体自我相关刺激引起的 P2 振幅无差异。此外，个体自我相关刺激引起的 N2 振幅小于集体自我相关刺激和非自我相关刺激引起的 N2 振幅，且集体自我相关刺激和非自我相关刺激引起的 N2 振幅无差异。此外，个体自我相关刺激引起的 P3 振幅大于集体自我相关刺激引起的 P3 振幅，而集体自我相关刺激引起的 P3 振幅又大于非自我相关刺激引起的 P3 振幅。总之，除了在早期 P2 处理阶段发现经典的自我相关效应外，本研究还证明了在 N2 和 P3 处理阶段个体自我比集体自我更为重要。
