期刊
BIOLOGICAL PSYCHOLOGY
卷 86, 期 3, 页码 279-288出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.biopsycho.2010.12.009
关键词
Aggression; Impulsivity; P300; Novelty P3; Event-related potential
资金
- National Institute of Mental Health [R21 MH65137, RC1 MH089727]
Impulsive-aggressive individuals exhibit deficits in amplitude of the P3 brain potential response, however, it remains unclear how separable dispositional traits account for this association. The current study sought to clarify the basis of this association by examining contributions of trait impulsiveness and stress reactivity to the observed relationship between dispositional aggression and amplitude of the P3 brain potential response in a visual novelty-oddball procedure. A significant negative association was found between aggressiveness and amplitude of P3 response to both target and novel stimuli over frontal-central scalp sites. Impulsivity showed a parallel inverse relationship with P3 amplitude, attributable to its overlap with dispositional aggression. In contrast, stress reactivity did not exhibit a zero-order association with P3 amplitude, but modestly predicted P3 in a positive direction after accounting for its overlap with aggression. Results are discussed in terms of their implications for individual difference variables and brain processes underlying impulsive-aggressive behavior. (C) 2011 Elsevier B.V. All rights reserved.
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