Journal
SOCIAL COGNITIVE AND AFFECTIVE NEUROSCIENCE
Volume 7, Issue 7, Pages 850-857Publisher
OXFORD UNIV PRESS
DOI: 10.1093/scan/nsr060
Keywords
aggression; behavioral inhibition; beta oscillations; electroencephalography; frontal cortex; hostility; motor cortex
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Funding
- Netherlands Organization for Scientific research (NWO) [VIDI 452-07-012]
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Asymmetrical patterns of frontal cortical activity have been implicated in the development and expression of aggressive behavior. Along with individual motivational tendencies, the ability to restrain one's impulses might be a factor in aggressive behavior. Recently, a role for the inhibitory cortical beta rhythm was suggested. The present study investigated whether individual differences in resting state asymmetries in the beta frequency band were associated with trait aggression and behavioral inhibition. In addition, the selective contributions of the prefrontal and motor cortex areas to these associations were examined. Results showed that relative dominant right frontal beta frequency activity was associated with both heightened trait aggression, especially hostility, and reduced response inhibition. Moreover, asymmetries over the anterior electrode locations proved to be related most closely to trait aggression, while asymmetries over the central electrode locations were associated with response inhibition. Together these findings show that right-dominant frontal beta activity is positively associated with aggressive tendencies and reduced behavioral inhibition.
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