Lou Yixue, Meng Xianxin, Yang Jiemin, Zhang Shu, Long Quanshan, Yuan Jiajin
Key Laboratory of Cognition and Personality (SWU), Ministry of Education, Chongqing, 400715, China.
Faculty of Psychology, Southwest University, Chongqing, 400715, China.
Exp Brain Res. 2016 Mar;234(3):721-31. doi: 10.1007/s00221-015-4492-5. Epub 2015 Nov 19.
The present study explored whether neuroticism modulates the impact of extraversion on attention orienting to pleasant and unpleasant pictures of diverse emotional intensities. We measured event-related potentials for highly emotional, mildly emotional, and neutral stimuli in both pleasant and unpleasant blocks, while subjects (16 stable ambiverts, 15 stable extraverts, 17 neurotic ambiverts, and 17 neurotic extraverts) were asked to perform a standard/deviant categorization task, irrespective of the emotionality of the deviants. The results revealed a modulation effect of neuroticism in the impact of extraversion on emotional attention. On the one hand, irrespective of extraversion, emotionally stable samples showed increased N200 amplitudes for highly unpleasant (HN) stimuli relative to mildly unpleasant (MN) and neutral stimuli, while these samples exhibited no significant emotion magnitude effect in the pleasant block. On the other hand, although neurotic samples, both extraverts and ambiverts, showed enhanced N2 amplitudes for HN stimuli than neutral stimuli, neurotic extraverts displayed increased N2 amplitudes for highly pleasant (HP) and mildly pleasant (MP) stimuli than neutral stimuli, which was absent in neurotic ambiverts. These results extend our understanding of the relationship between extraversion and emotion by showing that neuroticism amplifies the positive emotional bias of extraverts.
本研究探讨了神经质是否会调节外向性对指向不同情绪强度的愉快和不愉快图片的注意力定向的影响。我们在愉快和不愉快的组块中测量了对高情绪、低情绪和中性刺激的事件相关电位，同时让受试者（16名稳定的中间型性格者、15名稳定的外向型性格者、17名神经质的中间型性格者和17名神经质的外向型性格者）执行标准/偏差分类任务，而不考虑偏差刺激的情绪性。结果揭示了神经质在外向性对情绪注意力影响方面的调节作用。一方面，无论外向性如何，情绪稳定的样本相对于低不愉快（MN）和中性刺激，对高不愉快（HN）刺激的N200波幅增加，而这些样本在愉快组块中未表现出显著的情绪强度效应。另一方面，虽然神经质的样本，包括外向型性格者和中间型性格者，相对于中性刺激，对HN刺激的N2波幅增强，但神经质的外向型性格者相对于中性刺激，对高愉快（HP）和低愉快（MP）刺激的N2波幅增加，而神经质的中间型性格者则没有这种情况。这些结果扩展了我们对外向性与情绪之间关系的理解，表明神经质放大了外向型性格者的积极情绪偏向。
