Early cortical processing of natural and artificial emotional faces differs between lower and higher socially anxious persons
Early cortical processing of natural and artificial emotional faces differs between lower and higher socially anxious persons
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DOI：
10.1007/s00702-008-0108-6
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发表时间：
2009-06-01
影响因子：
3.3
通讯作者：
Pauli, Paul
中科院分区：
文献类型：
--
作者：
Muehlberger, Andreas;Wieser, Matthias J.;Pauli, Paul
情绪化的面部表情为社会互动提供了关键信息。最重要的是，人们认为愤怒的脸反映了潜在的社会威胁。我们研究了低水平和高水平社交焦虑参与者的事件相关电位（erp），这些事件相关电位是由表达恐惧、愤怒、快乐或没有情绪的自然和人工面孔触发的。总体而言，人工面孔比自然面孔引起更强的P100和N170反应。此外，与中性面部表情相比，情绪性面部表情的N170成分更大。在面对恐惧和愤怒的面部表情时，社交焦虑与早期后验负性（EPN）的情绪调节增强有关。此外，虽然低社交焦虑参与者的情绪面孔的后期积极电位（LPP）大于中性面孔，但高社交焦虑参与者的后期积极电位（LPP）没有差异。因此，在社交焦虑程度较高的参与者中，无论是情绪化面孔还是中性面孔，LPPs都可能得到增强。此外，EPN和LPP的调制在自然和人工面孔之间具有可比性。这些结果表明，社交焦虑影响面孔的早期知觉加工，人工面孔适合用于心理生理情绪研究。
Emotional facial expressions provide critical information for social interactions. Above all, angry faces are assumed to reflect potential social threat. We investigated event-related potentials (ERPs) triggered by natural and artificial faces expressing fear, anger, happiness or no emotion in participants with low and high levels of social anxiety. Overall, artificial faces elicited stronger P100 and N170 responses than natural faces. Additionally, the N170 component was larger for emotional compared to neutral facial expressions. Social anxiety was associated with an enhanced emotional modulation of the early posterior negativity (EPN) in response to fearful and angry facial expressions. Additionally, while the late positive potential (LPP) was larger for emotional than for neutral faces in low socially anxious participants, LPPs of higher socially anxious participants did not differ. LPPs might therefore be enhanced in higher socially anxious participants for both emotional and neutral faces. Furthermore, the modulations of the EPN and LPP were comparable between natural and artificial faces. These results indicate that social anxiety influences early perceptual processing of faces and that artificial faces are suitable for psychophysiological emotion research.