Suo Tao, Liu Lei, Chen Chaoyang, Zhang Entao
Institute of Psychology and Behavior, Department of Psychology, School of Education, Henan University, Kaifeng, China.
Department of Psychology, Ningbo University, Ningbo, China.
Front Psychiatry. 2017 Sep 27;8:180. doi: 10.3389/fpsyt.2017.00180. eCollection 2017.
The perceptual processing of emotional stimuli is subject to the regulation of brain function. This study investigated whether frontal electroencephalography (EEG) alpha asymmetry at resting conditions predicted the evaluation of emotional picture stimuli by event-related potentials (ERPs). In this study, participants first completed a 2-min resting task, and then passively viewed emotional pictures. The results showed that left active individuals had smaller frontal EEG alpha asymmetry scores to negative pictures than to positive and neutral pictures, whereas right active individuals had similar frontal EEG alpha asymmetry scores to negative, positive, and neutral pictures. Furthermore, the study showed a larger P300 to negative pictures than to positive and neutral pictures for left active individuals; however, there were no significant ERP differences to negative, positive, and neutral pictures for right active individuals. These findings suggest that frontal EEG alpha asymmetry at resting conditions can reflect interindividual differences in emotional perception tendencies to emotional picture stimuli.
情绪刺激的感知加工受大脑功能的调节。本研究调查了静息状态下额叶脑电图（EEG）α波不对称性是否能通过事件相关电位（ERP）预测对情绪图片刺激的评价。在本研究中，参与者首先完成一项2分钟的静息任务，然后被动观看情绪图片。结果显示，左侧激活个体对负面图片的额叶EEGα波不对称性得分比对正面和中性图片的得分小，而右侧激活个体对负面、正面和中性图片的额叶EEGα波不对称性得分相似。此外，研究表明，左侧激活个体对负面图片的P300波幅比对正面和中性图片的大；然而，右侧激活个体对负面、正面和中性图片的ERP没有显著差异。这些发现表明，静息状态下的额叶EEGα波不对称性可以反映个体对情绪图片刺激的情绪感知倾向的个体差异。
