Kiehl K A, Hare R D, McDonald J J, Brink J
Department of Psychology, University of British Columbia, Vancouver, Canada.
Psychophysiology. 1999 Nov;36(6):765-74.
We tested the hypothesis that psychopathy is associated with abnormal processing of semantic and affective verbal information. In Task 1, a lexical decision task, and in Task 2, a word identification task, participants responded faster to concrete than to abstract words. In Task 2, psychopaths made more errors identifying abstract words than concrete words. In Task 3, a word identification task, participants responded faster to positive than to negative words. In all three tasks, nonpsychopaths showed the expected event-related potential (ERP) differentiation between word stimuli, whereas psychopaths did not. In each task, the ERPs of the psychopaths included a large centrofrontal negative-going wave (N350); this wave was absent or very small in the nonpsychopaths. The interpretation and significance of these differences are discussed.
心理变态与语义和情感语言信息的异常处理有关。在任务1（词汇判断任务）和任务2（单词识别任务）中，参与者对具体词汇的反应比对抽象词汇的反应更快。在任务2中，心理变态者在识别抽象词汇时比识别具体词汇时犯的错误更多。在任务3（单词识别任务）中，参与者对积极词汇的反应比对消极词汇的反应更快。在所有这三项任务中，非心理变态者在单词刺激之间表现出预期的事件相关电位（ERP）差异，而心理变态者则没有。在每项任务中，心理变态者的ERP都包含一个大的中央额叶负向波（N350）；在非心理变态者中，这个波不存在或非常小。我们将讨论这些差异的解释和意义。
