不同类型面孔情绪变化识别的ERP研究

发布时间：2018-03-15 04:23

本文选题：生中面孔情绪变化　切入点：社交焦虑　出处：《贵州师范大学》2017年硕士论文　论文类型：学位论文

【摘要】：情绪面孔是最常见的视觉刺激,通常传递着非常重要的社会信息,这些信息有助于人们在社会交往中较快地推测他人的行为意图。面孔情绪变化是指同一个人的面部表情从一种情绪变化到另一种情绪,比如,从中性情绪变化到生气情绪。在面孔情绪变化的研究中,大量的研究考察了个体对中-生面孔情绪变化的识别,但对生-中面孔情绪变化(从生气表情变化到中性表情)的研究较少。社交焦虑障碍也被称为社交恐惧症,是指个体在社交情境或人际交流中感到持久的害怕和不安,并主动采取回避的一种社交行为。目前已有大量的研究考察了社交焦虑个体对静态情绪面孔的识别,但是对社交焦虑个体识别面孔情绪变化的研究还相对较少。因此,本研究运用ERP技术首先考察个体对中-生和生-中面孔情绪变化的识别,然后在此基础之上考察社交焦虑个体对以上两种基本面孔情绪变化的识别。当前研究的意义不仅有助于研究者从新的视角考察个体对面孔情绪变化的加工,同时有助于进一步明晰高社交焦虑个体的认知加工过程和发病机制,并为社交焦虑的干预工作提供直接的理论依据。当前研究的实验材料包括8张房屋图片和78段面孔情绪变化视频,其中每种情绪变化类型各26段视频,男女各一半。实验采用了S1-S2范式,实验任务是让被试观看三种情绪变化的视频并判断前后两段视频中的人是否是同一个人。实验一以25名大学生被试为研究对象,考察这些被试对中-生和生-中面孔情绪变化的识别,而实验二以13名高和14名低社交焦虑被试为研究被试,探究他们对不同类型(中-生和生-中面孔情绪变化)面孔情绪变化的识别。研究得出三个主要结论:(1)高社交焦虑个体在识别生-中面孔情绪变化时所诱发的P200波幅显著小于其在识别情绪不变化时所诱发的波幅,而低社交焦虑个体却未表现出这种差异,这一结果表明高社交焦虑个体在识别面孔情绪变化时表现出加工缺陷。(2)高低社交焦虑被试在识别生-中面孔情绪变化时所诱发的N170波幅显著大于其对中-生情绪变化的识别,这表明高低社交焦虑被试在识别生-中这种情绪变化时,更倾向采用特征加工的方式。(3)个体在生-中面孔情绪变化条件下的反应时显著快于中-生面孔情绪变化。此外,个体在识别生-中面孔情绪变化条件的P100潜伏期显著的短于中-生的情绪变化。这些结果表明个体可以更准确、更迅速地识别生-中情绪变化,对其表现出识别偏向。
[Abstract]:Emotional faces are the most common visual stimuli that usually convey very important social messages. This information helps people to speculate more quickly on the behavioral intentions of others in social interactions. Facial emotional change refers to the change of facial expressions from one emotion to another, for example, From neutral emotion to angry emotion. In the study of facial emotion change, a large number of studies have examined the individual recognition of middle-born facial emotion change, But less research has been done on the mood changes in the libido to neutral faces. Social anxiety disorder, also known as social phobia, refers to the persistent fear and uneasiness of an individual in a social situation or interpersonal communication. At present, a large number of studies have examined the recognition of static emotional faces by individuals with social anxiety, but there are relatively few studies on the recognition of emotional changes of faces by individuals with social anxiety. In this study, ERP technique was used to investigate the recognition of facial emotion changes in middle and middle faces. On the basis of this, we investigate the recognition of the two basic facial emotion changes by the individuals with social anxiety. The significance of the current research is not only helpful for the researchers to examine the processing of the changes in the facial emotions from a new perspective. It also helps to further clarify the cognitive process and pathogenesis of individuals with high social anxiety. The current research materials include 8 pictures of houses and 78 videos of facial mood changes, including 26 videos for each type of mood change. The experiment used S1-S2 paradigm. The task of the experiment was to ask the subjects to watch three kinds of video of mood changes and determine whether the person in the two videos was the same person. In experiment one, 25 college students were selected as the subjects. These subjects were investigated to identify the emotional changes of middle and middle faces. In experiment two, 13 subjects with high social anxiety and 14 subjects with low social anxiety were selected as subjects. This study explored their recognition of different types of facial mood changes (middle-born and born-middle-face mood changes). Three main conclusions were drawn: 1) the P200 induced by high social anxiety individuals in identifying the birth-middle facial mood changes. The amplitude is significantly smaller than the amplitude induced by the identification of unchanged emotions, Individuals with low social anxiety did not, however, show this difference. The results showed that the individuals with high social anxiety showed processing defects in identifying the change of facial emotion.) the amplitude of N170 induced by high and low social anxiety was significantly larger than that of recognition of the change of emotion in middle and middle face. This indicates that the subjects with high and low social anxiety tend to adopt the method of feature processing when they recognize the emotional changes in life and middle face.) the response time of individuals under the condition of changing emotion of life and middle faces is significantly faster than that of middle faces. In addition, the change of emotion of middle and middle faces is much faster than that of high and low social anxiety. The P100 incubation period of the individual in the condition of recognizing the change of the emotion between the born and the middle face is significantly shorter than that in the middle one. These results show that the individual can recognize the change of the emotion more accurately and rapidly and show the recognition bias towards it.
【学位授予单位】：贵州师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：B842

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