600页
心理学
社交焦虑
期望理论
刺激(心理学)
判决
焦虑
事件相关电位
口译(哲学)
认知心理学
听力学
发展心理学
认知
神经科学
社会心理学
精神科
医学
语言学
哲学
400奈米
计算机科学
程序设计语言
作者
Jason S. Moser,Greg Hajcak,Jonathan D. Huppert,Edna B. Foa,Robert F. Simons
出处
期刊:Emotion
[American Psychological Association]
日期:2008-10-01
卷期号:8 (5): 693-700
被引量:78
摘要
Little is known about psychophysiological correlates of interpretation bias in social anxiety. To address this issue, the authors measured event-related brain potentials (ERPs) in high and low socially anxious individuals during a task wherein ambiguous scenarios were resolved with either a positive or negative ending. Specifically, the authors examined modulations of the P600, an ERP that peaks approximately 600 ms following stimulus onset and indexes violations of expectancy. Low-anxious individuals were characterized by an increased P600 to negative in comparison with positive sentence endings, suggesting a positive interpretation bias. In contrast, the high-anxious group evidenced equivalent P600 magnitude for negative and positive sentence endings, suggesting a lack of positive interpretation bias. Similar, but less reliable results emerged in earlier time windows, that is, 200-500 ms poststimulus. Reaction time, occurring around 900 ms poststimulus, failed to show a reliable interpretation bias. Results suggest that ERPs can detect interpretation biases in social anxiety before the emission of behavioral responses.
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