Alternative TitleAnticipatory Anxiety Modulates the Processing of FacialExpressions
廖冲; 陆娟芝; 古若雷; 徐鹏飞; 罗跃嘉; 崔芳
First Author廖冲
Source Publication心理科学
Contribution Rank3
Other AbstractThe human brain responds before the application of aversive stimuli.Anticipation allows the organism to prepare its nociceptive system to respond adequately to the subsequent stimulus.The uncertainty of occurrence and intensity of an aversive event may lead to increased anticipatory anxiety,fear,physiological arousal and sensory perception.How does the anticipatory anxiety induced by the intensity of an uncertain aversive event influence the processing of social stimuli such as other’s facial expressions?The present study used a revised version of the'monetary wheel of fortune'game to induce different levels of anticipatory anxiety.Two kinds of bets were set:1 and 100,'1'meant that the participants would win/lose 1 point(equivalent to 0.1 Yuan);'100'meant that the participants would win/lose 100 points(equivalent to 10 Yuan).After the bet was chosen and before the outcome appeared,the participants were presented with pictures of facial expressions(including three kinds:happy,neutral and fearful).Participants were instructed to judge the valence of the expression by pressing buttons.The EEGs during participants’observation of different facial expression under different levels of anticipatory anxiety were recorded and compared.Since this was a novel paradigm,we ran a validation test with 20 participants who did not participate in the EEG studies.They were instructed to rate the anxiety level according to their current feelings after the fortune is done(1 or 100 was chosen)on a 9-point scale(from 1-not anxious at all to 9-extremely anxious).Results of the validation test indicated that 100 elicited a significantly higher level of anxiety than 1.Therefore,this novel paradigm could elicit a different level of anticipatory anxiety as we expected.On the behavioral level,we found that the participants showed a significant negative bias in which they tended to under-rate the pleasantness of neutral face under the high anticipatory anxiety conditions.On the ERP level,a significant interaction of anticipatory anxiety and facial expressions was observed on the N170 component.Both happy and fearful face induced significantly greater N170 than neutral face only in high anticipatory anxiety conditions but not in low anticipatory anxiety conditions.Crucially,we found that the fearful face induced N170 amplitude was significantly greater under high anticipatory anxiety condition than under low anticipatory anxiety condition,while the difference of N170 induced by happy and neutral faces between the two anticipatory anxiety levels was insignificant.In addition,we also found that that the modulation effect of anticipatory anxiety on the fearful face induced N170 was related to the personality trait scores of neuroticism and state-trait anxiety.Combined with behavioral and ERP findings,these results showed that the level of anticipatory anxiety had an impact on the processing of facial expressions,and the processing of different expressions was affected by the anticipatory anxiety differently.Previous studies have shown that patients with various anxiety disorders,including phobia,generalized anxiety disorder and social phobia,may exhibit abnormal anticipatory anxiety.The present study focusing on the healthy population will help deepen our understanding of the mechanism of abnormality in the diseased population.
Keyword预期焦虑 恐惧面孔 事件相关电位 N170
Project Intro.国家自然科学基金青年科学基金项目(31500877)的资助
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Document Type期刊论文
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GB/T 7714
廖冲,陆娟芝,古若雷,等. 预期焦虑对面孔表情加工的影响[J]. 心理科学,2019,42(02):258-264.
APA 廖冲,陆娟芝,古若雷,徐鹏飞,罗跃嘉,&崔芳.(2019).预期焦虑对面孔表情加工的影响.心理科学,42(02),258-264.
MLA 廖冲,et al."预期焦虑对面孔表情加工的影响".心理科学 42.02(2019):258-264.
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