Event-Related Potentials to Facial Expressions Are Related to Stimulus-Level Perceived Arousal and Valence.

IF 2.9 2区 心理学 Q2 NEUROSCIENCES
Amie J Durston, Roxane J Itier
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引用次数: 0

Abstract

Facial expressions provide critical details about social partners' inner states. We investigated whether event-related potentials (ERP) related to the visual processing of facial expressions are modulated by participants' perceived arousal and valence at the stimulus level. ERPs were recorded while participants (N = 80) categorized the gender of faces expressing fear, anger, happiness, and no emotion. Participants then viewed each face again and rated them on arousal and valence using 1-9 Likert scales. For each participant, ratings of each unique face were linked back to corresponding ERP trials. ERPs were analyzed at all time points and electrodes using hierarchical mass univariate statistics. Three different ANOVA models were employed: the original emotion model, and models with valence or arousal ratings as trial-level regressors. Results from models with ratings highly overlapped with the original model, although they were more temporally restricted. The N170 component was the most impacted by arousal and valence ratings, with four out of six emotion contrasts revealing significant valence or arousal interactions. Emotion effects on the P2 component were mostly unrelated to ratings. On the EPN component, only two contrasts related to both arousal and valence ratings. Thus, ERP emotion effects are related to participants' perceived arousal and valence of the stimuli, although this association depends on the contrast analyzed. These findings, their limitations, and generalizability are discussed in reference to existing theories and literature.

面部表情的事件相关电位与刺激水平的知觉唤醒和效价有关。
面部表情提供了社交伙伴内心状态的关键细节。研究了与面部表情视觉加工相关的事件相关电位(ERP)在刺激水平上是否受到被试知觉唤醒和效价的调节。当参与者(N = 80)对表达恐惧、愤怒、快乐和没有情绪的面孔进行性别分类时,记录erp。然后,参与者再次观看每张脸,并使用1-9李克特量表对它们的唤醒和效价进行评分。对于每个参与者,每张独特面孔的评分都与相应的ERP试验相关联。在所有时间点和电极上使用分层质量单变量统计分析erp。采用了三种不同的方差分析模型:原始情绪模型,以及以效价或唤醒评级作为试验水平回归因子的模型。具有评级的模型的结果与原始模型高度重叠,尽管它们在时间上受到更多限制。N170成分受唤醒和效价评级的影响最大,六种情绪对比中有四种显示出显著的效价或唤醒相互作用。情绪对P2分量的影响与评分无关。在EPN成分上,只有两个对比与唤醒和效价评级相关。因此,ERP情绪效应与参与者的感知唤醒和刺激的效价有关,尽管这种关联取决于所分析的对比。这些发现,他们的局限性,和推广讨论参考现有的理论和文献。
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来源期刊
Psychophysiology
Psychophysiology 医学-神经科学
CiteScore
6.80
自引率
8.10%
发文量
225
审稿时长
2 months
期刊介绍: Founded in 1964, Psychophysiology is the most established journal in the world specifically dedicated to the dissemination of psychophysiological science. The journal continues to play a key role in advancing human neuroscience in its many forms and methodologies (including central and peripheral measures), covering research on the interrelationships between the physiological and psychological aspects of brain and behavior. Typically, studies published in Psychophysiology include psychological independent variables and noninvasive physiological dependent variables (hemodynamic, optical, and electromagnetic brain imaging and/or peripheral measures such as respiratory sinus arrhythmia, electromyography, pupillography, and many others). The majority of studies published in the journal involve human participants, but work using animal models of such phenomena is occasionally published. Psychophysiology welcomes submissions on new theoretical, empirical, and methodological advances in: cognitive, affective, clinical and social neuroscience, psychopathology and psychiatry, health science and behavioral medicine, and biomedical engineering. The journal publishes theoretical papers, evaluative reviews of literature, empirical papers, and methodological papers, with submissions welcome from scientists in any fields mentioned above.
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