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Electrophysiological evidence that psychopathic personality traits are associated with atypical response to salient distractors.
Cognitive, Affective, & Behavioral Neuroscience ( IF 2.9 ) Pub Date : 2020-01-02 , DOI: 10.3758/s13415-019-00762-8
Patrick L Carolan 1, 2 , John M Gaspar 1 , Killian Kleffner 1 , Mario Liotti 1
Affiliation  

Abstract

Event-related potentials (ERPs) were used to assess the neural mechanisms underlying visual-spatial attention abnormalities associated with psychopathic personality traits. Sixty-nine undergraduates (56 women, 13 men) completed the Psychopathic Personality Inventory-Revised (PPI-R; Lilienfeld & Widows, 2005) and performed two cognitive tasks in which search displays containing a lateralized singleton encircled a fixation point that changed luminance from trial-to-trial. When searching for the singleton as a target, PPI-R scores were uncorrelated with ERP measures of its salience (Ppc), goal-directed selection (N2pc), and working memory evaluation (negative amplitude CDA). In contrast, when responding to the changes in luminance at fixation and ignoring the lateral singleton as a salient distractor, PPI-R Self-Centered Impulsivity factor scores were positively correlated with a potential indicator of distractor suppression (a sustained positive amplitude CDA). These findings provide support for a neurophysiological interpretation of the changes in visual-spatial attention associated with psychopathic personality traits: normal selection of target information accompanied by greater elimination of distractor information at a later visual working memory stage.



中文翻译:

电生理证据表明,精神病性人格特质与对明显干扰物的非典型反应有关。

摘要

事件相关电位(ERP)用于评估与精神病性人格特质相关的视觉空间注意异常的神经机制。69名大学生(56名女性,13名男性)完成了对精神病性人格量表的修订(PPI-R; Lilienfeld&Widows,2005年))并执行了两项认知任务,其中包含横向单例的搜索显示围绕着固定点,该固定点改变了试验之间的亮度。当搜索单身者作为目标时,PPI-R得分与ERP的显着性(Ppc),目标导向选择(N2pc)和工作记忆评估(负振幅CDA)无关。相反,当响应固定时的亮度变化而忽略侧向单眼作为显着干扰物时,PPI-R自中心冲动因子评分与干扰物抑制的潜在指标(持续的正振幅CDA)正相关。这些发现为与精神病性状相关的视觉空间注意力变化的神经生理学解释提供了支持:

更新日期:2020-03-28
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