群体面孔情绪感知的神经机制

如何揭示情绪性面孔加工的认知神经机制一直是心理学和社会神经科学的热点课题。以往研究主要采用单独面孔表情作为情绪诱发或呈现方式, 但对群体情绪知觉与体验的关注极其缺乏, 而群体面孔表情作为群体情绪的主要表达方式, 亟待深入关注。因此, 本项目将采用群体面孔(面孔群)表情作为群体情绪刺激, 拟通过事件相关电位(ERP)、核磁共振(fMRI)以及经颅磁刺激(TMS)等技术结合行为研究, 尝试从情绪信息(效价和强度)、朝向信息(正面、侧面、倒置)、完整性(局部呈现、完整呈现)、空间频率信息(完整、高频、低频)等方面探明群体面孔表情加工的时间动态特征和大脑激活模式。这将有助于全面认识和深入了解群体情绪识别的一般规律, 对于更好地优化社会互动也具有现实意义。     

注视者及观察者因素对注视知觉的影响

注视知觉既包括识别他人对周围环境的注视位置, 也包括对他人是否在注视自己(即直视)的感知。诸多研究表明, 注视知觉过程受来自目光发出者与感知者多种因素的影响。从眼神沟通中不同角色角度出发, 将这些影响因素分为注视者因素和观察者因素。具体而言, 注视者因素主要探讨了眼部及头部物理特征及面孔情绪与吸引力对注视知觉的影响。而观察者因素则探讨了个体的心理或精神障碍、个体当前状态特征及观察者的性别、种族及文化差异对注视知觉的影响。未来研究可以从创新实验设计与任务出发, 探讨注视者刺激的实验材料与观察者特征的临床应用及跨文化差异等方面的问题。     

面孔社会知觉中的表情效应

面孔社会知觉指知觉者基于面孔所有者的面孔信息对面孔所有者的人格特质等进行知觉推断的过程。表情是人们进行面孔社会知觉的关键线索之一。表情可以单独通过本身的局部特征和结构信息影响面孔社会知觉, 还可以通过对知觉者的情绪诱发或表情传达的行为倾向性来影响面孔社会知觉的结果。考虑到现实生活中多种表情类型的组合及特定表情(伪装表情)高频出现以及知觉者判断人格特质存在主观性, 未来研究要加强多种表情类型对面孔社会知觉的影响研究, 还要进一步将知觉者因素作为未来研究的变量。     

Positive facial affect looks healthy

A healthy appearance is linked to important behavioural outcomes. Here we investigated whether positive facial affect is a cue for perceived health. In study one, two groups of participants rated the perceived health or perceived happiness of a large set of faces with neutral expressions. Perceived happiness predicted perceived health, as did anthropometric measures of expression. In a second experimental study, we collected ratings of perceived health for a wide age range of target faces with either neutral or smiling expressions. Smiling faces were rated as being much healthier looking than neutral faces, confirming that facial expression plays a role in the perception of health. A third study investigating attractiveness as a possible mediator found that expression still had a significant direct effect on perceived health, after accounting for attractiveness. Together, these studies systematically show that facial affect plays a critical role in shaping our perceptions of health in others.     

自闭症幼儿的情感认知特点的实验研究

本实验采用3(组别)×4(基本情绪)×3(实验材料)×2(实验条件)的混合设计的方法对平均心理年龄24个月的6名自闭症幼儿和心理年龄与之相近的6名正常儿童和6名弱智儿童的情感认知特点进行了比较性的研究。实验结果表明:在“语言提示”条件下,自闭症幼儿的正答率远远低于正常儿童和弱智儿童,但在“表情提示”条件下,自闭症幼儿与弱智幼儿几乎没差距,在对“愤怒”和“惊恐”等情绪的认知中,正答率高于弱智幼儿。这意味着自闭症幼儿可能运用了其他的替代策略进行情感认知。     

The Perception of Four Basic Emotions in Human and Nonhuman Faces by Children With Autism and Other Developmental Disabilities

Children who experienced autism, mental retardation, and language disorders; and, children in a clinical control group were shown photographs of human female, orangutan, and canine (boxer) faces expressing happiness, sadness, anger, surprise and a neutral expression. For each species of faces, children were asked to identify the happy, sad, angry, or surprised expressions. In Experiment 1, error patterns suggested that children who experienced autism were attending to features of the lower face when making judgements about emotional expressions. Experiment 2 supported this impression. When recognizing facial emotion, children without autism performed better when viewing the full face, compared to the upper and lower face alone. Children with autism performed no better when viewing the full face than they did when viewing partial faces; and, performed no better than chance when viewing the upper face alone. The results are discussed with respect to differences in the manner that children with and without autism process social information communicated by the face.     

情绪加工的脑机制研究及其现状

本文从情绪的效价载荷及其脑功能成像研究、面部表情的识别及其脑功能成像研究以及情绪的诱发及其脑功能成像研究等三方面介绍了情绪加工的脑机制及其研究现状。从现有的研究成果来看,大脑皮层在加工不同效价载荷的情绪时具有很大的重叠性;有关面部表情识别的研究表明,不同的神经环路负责调节对不同面部表情的反应;有关诱发的情绪的研究表明,前扣带回皮层在表征实验诱发的情绪时扮演着一个非常重要的角色。文章最后指出了情绪研究目前面临的一些问题,并指出在我国开展情绪的脑机制研究的重要意义。     

社会性发展迟滞大学生的表情加工及其类别知觉

本研究比较了社会性发展迟滞大学生与正常大学生的表情加工,探讨迟滞个体表情加工的特点及可能原因,还验证面部表情类别知觉效应。采用Morph情绪面孔实验发现：除恐惧情绪外,基本表情的强度越大被试对表情的识别越好;但迟滞个体的表情加工速度比正常个体慢,对愤怒的识别也更差;他们辨别混合表情中悲伤、愤怒的类别界线都发生偏移。迟滞个体的表情加工能力不如正常个体,并且对悲伤具有反应偏向,对愤怒存在加工缺陷。     

面孔识别过程中多重社会亚范畴的交互作用

认知者往往依据陌生个体面孔所携带的性别、年龄、种族等多重社会范畴信息对其进行加工,以期快速识别和了解他人。在基于面孔识别的多重社会范畴加工过程中,亚范畴间存在着复杂的交互作用。研究者分别采用"Who Said What"范式、重复启动范式、加纳选择注意范式、鼠标追踪范式等方法,发现亚范畴间的内隐加工具有彼此削弱的特性,外显加工存在交互影响的不对称性和偏差性。动态交互理论对此进行了进一步的理论分析与阐释。今后需更加科学地区分社会范畴加工的各个阶段,凸显内隐和外显加工的区别与联系;同时进一步整合各研究范式,克服方法异质导致的结果偏差甚至矛盾。     

情绪识别研究中被“冷落”的线索:躯体表情加工的特点、神经基础及加工机制

躯体和面孔是个体情绪表达与识别的重要线索。与面部表情相比,躯体表情加工的显著特点是补偿情绪信息,感知运动与行为信息,及产生适应性行为。情绪躯体与面孔加工的神经基础可能相邻或部分重合,但也存在分离;EBA、FBA、SPL、IPL等是与躯体表情加工相关的特异性脑区。今后应系统研究面孔、躯体及语音情绪线索加工潜在的神经基础,探讨躯体情绪加工的跨文化差异,考察情绪障碍患者的躯体表情加工特点。     

Personality as Performance

Abstract— As people seek to understand events within the world, they develop habitual tendencies related to categorization. Such tendencies can be measured by tasks that determine the relative ease or difficulty a person has in making a given distinction (e.g., between threatening and nonthreatening events). Researchers have sought to determine how categorization tendencies relate to personality traits on the one hand and emotional outcomes on the other. The results indicate that traits and categorization tendencies are distinct manifestations of personality. However, they often interact with each other. Three distinct interactive patterns are described. Categorization clearly does play a role in personality functioning, but its role goes beyond assimilation effects on behavior and experience.