Brain activity elicited by reward and reward omission in individuals with psychopathic traits: An ERP study.

Autor: Salim MA; Institute of Psychology, Erasmus University Rotterdam, The Netherlands; Department of Neurosciences, Universiti Sains Malaysia, Malaysia., van der Veen FM; Institute of Psychology, Erasmus University Rotterdam, The Netherlands., van Dongen JD; Institute of Psychology, Erasmus University Rotterdam, The Netherlands., Franken IH; Institute of Psychology, Erasmus University Rotterdam, The Netherlands. Electronic address: franken@fsw.eur.nl.
Jazyk: angličtina
Zdroj: Biological psychology [Biol Psychol] 2015 Sep; Vol. 110, pp. 50-8. Date of Electronic Publication: 2015 Jul 15.
DOI: 10.1016/j.biopsycho.2015.07.001
Abstrakt: Psychopathy has been associated with behavioral adaptation deficits, which might be associated with problems in feedback and reward processing. In the present study, we examined the relation between psychopathic traits and reward processing in a passive gambling task. A total of 39 male participants who scored high (HP) and 39 male participants who scored low (LP) on the Triarchic Psychopathy Measure (TriPM), total score were tested. Feedback-related Event-Related Potentials (ERPs; i.e., P2, FRN, and P3) on predicted and unpredicted rewards and reward omissions were compared between both groups. It was found that in HP individuals, the P2 was enhanced for predicted rewards and reward omissions, but not for unpredicted stimuli. Moreover, HP individuals as compared to the LP individuals demonstrated a generally reduced P3 amplitude. The FRN amplitude, however, did not differ between the two groups. In addition, HP individuals showed enhanced reward sensitivity on the self-report level. Taken together, these findings suggest that HP individuals show enhanced sensitivity to early and reduced sensitivity to later markers of processing reinforcement learning signals, which points in the direction of compromised behavioral adaptation.
(Copyright © 2015 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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