群体面孔情绪的整体编码及其影响因素  

The Ensemble Coding of Emotion in Facial Crowd and Its Influence Factors

作　　者：郝爽 叶倩君 何蔚祺 Hao Shuang;Ye Qianjun;He Weiqi(Research Center of Brain and Cognitive Neuroscience,Liaoning Normal University,Key laboratory of Brain and Cognitive Neuroscience of Liaoning Province,Dalian,116029)

机构地区：[1]辽宁师范大学脑与认知神经科学研究中心,辽宁省脑与认知神经科学重点实验室,大连116029

出　　处：《心理科学》2023年第1期50-56,共7页Journal of Psychological Science

基　　金：国家自然科学基金面上项目(31970991);辽宁省“兴辽英才计划”项目(XLYC2007106)的资助。

摘　　要：当面孔以群体形式出现,认知神经系统会自动整合情绪信息提取平均情绪,此过程被称为群体面孔情绪的整体编码。探讨其与低水平整体表征的分离,与个体表征的关系及神经活动特点是揭示其加工机制的关键,但目前尚未形成系统性模型。未来应综合利用眼动、神经电生理和脑成像技术,结合注意、记忆及社会线索进一步拓展对其认知神经机制和影响因素的研究,同时关注具有认知情感障碍的特殊人群,并从毕生发展的角度探索其发展轨迹。The research on the ensemble coding of emotion in facial crowd originated from the discovery that the visual system can represent the low-level visual features averagely. Haberman and Whitney(2007) used the mean emotion discrimination task for the first time to reveal that the visual system can also make ensemble representation for high-level facial emotions in addition to the low-level visual stimuli. The experimental paradigms,methods of determining emotional units and emotional discrimination thresholds they used lay an important foundation for future research.Since then, researchers have been trying to reveal the processing mechanism of ensemble coding of emotion in facial crowd by exploring the relationship with individual representation, the separation from the ensemble representation of low-level features and their neural activity characteristics. The results achieved are as follows: although the ensemble coding has strong cross-domain stability, for different categories of group stimuli, the ensemble coding is domain-specific. The process of ensemble coding may include not only automatic recognition of high-level facial stimuli and integration of emotional information, but also the calculation of low-level face features, which is regulated by attention resources. In addition, both ensemble representation and individual representation play a role in the process of extracting mean emotion, but the relationship between them changes dynamically between competition and coexistence. In terms of neural mechanism, some researchers used fMRI to investigate whether there have been different brain mechanisms between ensemble coding of emotion in facial crowd and individual facial expression processing. The results show that dorsal visual pathway is preferentially activated by the processing of crowd emotion. The activities of the intraparietal sulcus and superior frontal gyrus are more sensitive to crowd emotion perception, while the fusiform gyrus in the ventral visual pathway has more advantages in perceiving indi

关 键 词：群体面孔情绪 整体编码 注意资源 视觉加工 

分 类 号：B842[哲学宗教—基础心理学]