面孔识别动态增益效应研究综述

近年来,研究者围绕动态面孔识别中的动态增益效应开展了一系列的研究。本文围绕面孔熟悉程度和面孔的活动类型两个方面对与动态增益效应有关的一系列动态面孔认知研究进行了总结,并对不同研究的差异进行了比较和分析。最后,对动态面孔认知规律、眼动模式和脑机制等研究方向上的发展进行了展望。     

Implicit Motives Modulate Attentional Orienting to Facial Expressions of Emotion

We conducted two studies (Ns=52 and 60) to test the notion that the incentive salience of facial expressions of emotion (FEE) is a joint function of perceivers’ implicit needs for power and affiliation and the FEE’s meaning as a dominance or affiliation signal. We used a variant of the dot-probe task (Mogg & Bradley, 1999a) to measure attentional orienting. Joy, anger, surprise, and neutral FEEs were presented for 12, 116, and 231 ms with backward masking. Implicit motives were assessed with a Picture Story Exercise. We found that power-motivated individuals orient their attention towards faces signaling low dominance, but away from faces that signal high dominance, and (b) that affiliation-motivated individuals show vigilance for faces signaling low affiliation (rejection) and, to a lesser extent, orient attention towards faces signaling high affiliation (acceptance).     

Imitation of transitive and intransitive actions in healthy individuals

A handful of patients have been described as being impaired in performing transitive gestures, despite being still able to perform intransitive gestures. This impairment need not be explained by assuming different mechanisms; rather, it can be due to transitive actions being more difficult. In this study we tested whether neurologically healthy participants had greater difficulties in imitating transitive actions with respect to intransitive actions. Consistent with the prediction, subjects imitated intransitive better than transitive gestures. The ease of imitation of intransitive actions supports the complexity account of apraxic impairments.     

Implicit learning of social predictions

Humans exchange a range of nonverbal social signals in every interaction. It is an open question whether people use these signals, consciously or unconsciously, to guide social behavior. This experiment directly tested whether participants could learn to predict another person’s behavior using nonverbal cues in a single interaction, and whether explicit knowledge of the cue-outcome relationship was necessary for successful prediction. Participants played a computerized game of rock-paper-scissors against an avatar they believed was another participant. Sometimes the avatar generated a predictive facial cue before the play. On these trials, participants’ win-frequency increased over time, even if they did not acquire explicit knowledge of the predictive cue. The degree to which participants could predict the avatar (wins on cued trials) related to their self-reported liking of the avatar. These findings demonstrate the importance of implicit associative learning mechanisms in guiding social behavior on a moment-to-moment basis during interaction.     

Detection and recognition of emotional expressions: Effects of traits of personality disorder and gender

A problem in the processing of emotions has long been thought to be strongly associated with the aetiology and maintenance of personality disorders. Previous research has demonstrated a hyposensitivity to the faces expressing fear in those high on the traits of psychopathy, while patients with BPD have been shown to be hypersensitive to expressions in general. However, many previous studies could be explained by a bias in reporting particular expressions rather than a change in sensitivity to these expressions. Using two tasks, the present study examined both the detection and the recognition of four emotional expressions (anger, happy, sad, and fear) in a community sample of males and females. Measures of self-reported psychopathy and Borderline Personality traits were administered. The results showed marked gender differences. Psychopathy was negatively related to performance in both the detection and recognition of fear, but only for males. Borderline Personality traits were positively related to overall performance in the recognitions task, but only for females. The results suggest strong differences in the role that emotional processing might play between the genders.     

Attention to Emotion and Non-Western Faces: Revisiting the Facial Feedback Hypothesis

In a modified replication of Strack, Martin, and Stepper's demonstration of the Facial Feedback Hypothesis (1988), we investigated the effect of attention to emotion on the facial feedback process in a non-western cultural setting. Participants, recruited from two universities in Ghana, West Africa, gave self-reports of their perceived levels of attention to emotion, and then completed cartoon-rating tasks while randomly assigned to smiling, frowning, or neutral conditions. While participants with low Attention to Emotion scores displayed the usual facial feedback effect (rating cartoons as funnier when in the smiling compared to the frowning condition), the effect was not present in individuals with high Attention to Emotion. The findings indicate that (1) the facial feedback process can occur in contexts beyond those in which the phenomenon has previously been studied, and (2) aspects of emotion regulation, such as Attention to Emotion can interfere with the facial feedback process.     

自闭症碎镜理论之迷思:缘起、问题与前景

自闭症患者在社会沟通和交往障碍上主要涉及社会情感互动缺陷、非语言行为交流缺陷、发展维持和理解人际关系的缺陷。该群体在社会认知过程中潜在自动的直觉成分受损被视为其独特的临床症状。鉴于镜像神经元系统在社会认知的直觉成分上扮演的重要角色,该系统的功能障碍假说(或称"碎镜"理论)被提出并用以解释自闭症的成因及其异常表现。然而,在经历了10年的发展与证据检验后,该理论潜在的问题逐渐暴露。当前的研究显示,迄今为止人类镜像神经元系统的研究存在内在缺陷,镜像神经元系统至多是社会认知的附带原因,该系统功能障碍也并非自闭症患者社会认知障碍的必要条件。碎镜理论面临来自临床行为研究与认知神经科学实验证据的广泛质疑。未来,伴随自闭症研究对象的变化,镜像神经元的社会响应学说的提出,双个体范式、第二人称神经科学范式与计算精神病学的兴起,镜像神经元与自闭症的真正关系将有望得以阐明。     

特征信息和呈现时间对异族面孔知觉的影响

为了探讨面孔认知中内部特征和加工时间对种族判断的影响,采用面孔种族评价任务,选用被试内设计,通过操纵内部特征替换部位,刺激呈现时间,以及种族三个自变量进行研究.结果发现:对中国被试来说,面孔种族信息的获取是一个随时间不断累积信息的过程.在此过程中鼻和口特征并不能提供有效的亚洲和高加索种族信息,眼部特征和构型信息在加工中...