The Functional Role of Individual-Alpha Based Frontal Asymmetry in the Evaluation of Emotional Pictures: Evidence from Event-Related Potentials.

The Functional Role of Individual-Alpha Based Frontal Asymmetry in the Evaluation of Emotional Pictures: Evidence from Event-Related Potentials.
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基于个体阿尔法的额叶不对称在情绪图片评估中的功能作用:来自事件相关电位的证据

DOI:
10.3389/fpsyt.2017.00180
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发表时间:
2017
影响因子:
4.7
通讯作者:
Zhang E
Zhang E
中科院分区:
医学3区
文献类型:
--
作者:
Suo T;Liu L;Chen C;Zhang E

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情绪刺激的知觉加工受制于大脑功能的调节。本研究通过事件相关电位(ERPs)研究了静息状态下额叶脑电(EEG)α不对称性是否能预测情绪图片刺激的评估。在这项研究中,参与者首先完成2分钟的休息任务,然后被动地观看情绪图片。结果表明,左侧活动个体对负性图片的正面脑电α不对称性得分低于正面图片和中性图片,而右侧活动个体对负性图片、正面图片和中性图片的正面脑电α不对称性评分相近。此外,研究还发现,左侧活跃个体对负面图片的P300大于对积极图片和中性图片的P300;然而,对于右侧活跃个体,负面图片、积极图片和中性图片的事件相关电位没有显著差异。这些发现表明,额叶脑电在静止状态下的α不对称性可以反映个体对情绪图片刺激的情绪知觉倾向的差异。
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.
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