Chen Dian, Liu Ying, Zhang Yulin, Guo Yiting
School of Economy and Management, Southeast University, Nanjing, China.
Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
BMC Psychol. 2024 Dec 18;12(1):758. doi: 10.1186/s40359-024-02257-9.
The primary objective of this study was to investigate the neural basis of self-ambivalence, a phenomenon firmly established by behavioral research but whose underlying brain mechanisms have been less explored. Employing EEG methods and a modified self-reference paradigm, we analyzed event-related potentials using a linear mixed model to determine whether self-ambivalence processing exhibits a distinct neural representation. The results indicated that self-ambivalence processing primarily affected the late components (N2, N450, and P3), with N450 activation in the midline brain regions showing a significant positive correlation with scores on the Dialectical Self Scale. This finding suggests that individuals with higher levels of self-ambivalence may engage in more extensive processing of self-ambivalent information. The current study confirms the importance of the cortical midline in self-ambivalence and provides the first evidence of a distinct EEG representation of self-ambivalence processing. These findings contribute to our understanding of the neural mechanisms underlying self-ambivalence and highlight the potential role of individual differences in shaping the neural processing of self-ambivalent information.
本研究的主要目的是探究自我矛盾心理的神经基础，这是一种已被行为研究充分证实，但潜在脑机制较少被探索的现象。我们采用脑电图方法和改良的自我参照范式，使用线性混合模型分析事件相关电位，以确定自我矛盾心理加工是否呈现出独特的神经表征。结果表明，自我矛盾心理加工主要影响晚期成分（N2、N450和P3），中线脑区的N450激活与辩证自我量表得分呈显著正相关。这一发现表明，自我矛盾心理程度较高的个体可能会对自我矛盾信息进行更广泛的加工。本研究证实了皮质中线在自我矛盾心理中的重要性，并首次提供了自我矛盾心理加工独特脑电图表征的证据。这些发现有助于我们理解自我矛盾心理背后的神经机制，并强调个体差异在塑造自我矛盾信息神经加工过程中的潜在作用。
