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タイトル: Reduced engagement of the anterior cingulate cortex in the dishonest decision-making of incarcerated psychopaths
著者: Abe, Nobuhito  kyouindb  KAKEN_id
Greene, Joshua D
Kiehl, Kent A
著者名の別形: 阿部, 修士
キーワード: anterior cingulate cortex
cognitive conflict
deception
dishonesty
honesty
psychopathy
発行日: 5-Sep-2018
出版者: Oxford University Press (OUP)
誌名: Social Cognitive and Affective Neuroscience
巻: 13
号: 8
開始ページ: 797
終了ページ: 807
抄録: A large body of research indicates that psychopathic individuals lie chronically and show little remorse or anxiety. Yet, little is known about the neurobiological substrates of dishonesty in psychopathy. In a sample of incarcerated individuals (N = 67), we tested the hypothesis that psychopathic individuals show reduced activity in the anterior cingulate cortex (ACC) when confronted with an opportunity for dishonest gain, reflecting dishonest behavior that is relatively unhindered by response conflict. During functional magnetic resonance imaging (fMRI), incarcerated offenders with different levels of psychopathy performed an incentivized prediction task wherein they were given real and repeated opportunities for dishonest gain. We found that while incarcerated offenders showed a high rate of cheating, levels of psychopathic traits did not influence the frequency of dishonesty. Higher psychopathy scores predicted decreased activity in the ACC during dishonest decision-making. Further analysis revealed that the ACC was functionally connected to the dorsolateral prefrontal cortex (DLPFC), and that ACC activity mediated the relationship between psychopathic traits and reduced reaction times (RTs) for dishonest behavior. These findings suggest that psychopathic individuals behave dishonestly with relatively low levels of response conflict and that the ACC may play a critical role in this pattern of behavior.
記述: サイコパスがためらいなく嘘をつく脳のメカニズムを明らかにしました. 京都大学プレスリリース. 2018-07-19.
著作権等: © The Author(s) (2018). Published by Oxford University Press. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
URI: http://hdl.handle.net/2433/232686
DOI(出版社版): 10.1093/scan/nsy050
PubMed ID: 29982639
関連リンク: http://www.kyoto-u.ac.jp/ja/research/research_results/2018/180703_4.html
出現コレクション:学術雑誌掲載論文等

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