As Far as the Eye Can See: Relationship between Psychopathic Traits and Pupil Response to Affective Stimuli
As Far as the Eye Can See: Relationship between Psychopathic Traits and Pupil Response to Affective Stimuli
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DOI：
10.1371/journal.pone.0167436
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发表时间：
2017-01-24
期刊：
影响因子：
3.7
通讯作者：
Snowden, Robert J.
中科院分区：
文献类型：
--
作者：
Burley, Daniel T.;Gray, Nicola S.;Snowden, Robert J.
精神病患者表现出一系列的情感处理缺陷，通常与精神病的人际/情感成分有关。然而，先前的研究一直不一致的精神病，在罪犯和社区人群中，是否与缺乏自主神经反应有关，对情感刺激的简单呈现。瞳孔直径的变化是对情绪刺激的反应，可以作为情绪生理反应的客观指标。本研究使用瞳孔测量法来探索社区样本中的精神病态特征是否与对刺激的情感内容的低反应性有关。对102名成人（52名女性）社区参与者的瞳孔活动进行了记录，以回应情感（消极和积极影响）和情感中性刺激，包括场景图像、静态面部表情、动态面部表情和声音片段。精神病态的特征是用三重精神病态量表来测量的。在消极刺激下瞳孔直径增大，而在愉快刺激和中性刺激下瞳孔大小相似。主观觉醒与瞳孔直径之间的线性关系在声音片段的反应中被发现，但在场景的反应中不明显。与预测相反，精神病与所有刺激物对瞳孔直径的情绪调节无关。考虑到参与者的性别，结果是一样的。这表明，社区样本中的精神病与情感刺激的自主神经低反应性无关，并且这种影响与后来的防御/食欲动员缺陷有关。
Psychopathic individuals show a range of affective processing deficits, typically associated with the interpersonal/affective component of psychopathy. However, previous research has been inconsistent as to whether psychopathy, within both offender and community populations, is associated with deficient autonomic responses to the simple presentation of affective stimuli. Changes in pupil diameter occur in response to emotionally arousing stimuli and can be used as an objective indicator of physiological reactivity to emotion. This study used pupillometry to explore whether psychopathic traits within a community sample were associated with hypo-responsivity to the affective content of stimuli. Pupil activity was recorded for 102 adult (52 female) community participants in response to affective (both negative and positive affect) and affectively neutral stimuli, that included images of scenes, static facial expressions, dynamic facial expressions and sound-clips. Psychopathic traits were measured using the Triarchic Psychopathy Measure. Pupil diameter was larger in response to negative stimuli, but comparable pupil size was demonstrated across pleasant and neutral stimuli. A linear relationship between subjective arousal and pupil diameter was found in response to sound-clips, but was not evident in response to scenes. Contrary to predictions, psychopathy was unrelated to emotional modulation of pupil diameter across all stimuli. The findings were the same when participant gender was considered. This suggests that psychopathy within a community sample is not associated with autonomic hypo-responsivity to affective stimuli, and this effect is discussed in relation to later defensive/appetitive mobilisation deficits.