Neural correlates of impulsive-violent behavior: an event-related potential study.
Impulsive-violent offenders are often less capable of controlling their behavior. A cued Go/No-go task was used to test the hypothesis that impulsive-violent behavior reflects a deficit in the ability to inhibit prepotent responses and could be reflected in the measurement of event-related potentials. Results showed that the amplitudes of the N2 component at Fz reflected different degrees of inhibition in impulsive-violent offenders compared with matched controls. The N2 amplitude (No-go minus Go) was significantly lower in the impulsive-violent offenders than in matched controls. The amplitude of N2 increased when effort was required to withhold the Go intention. A smaller N2 amplitude was seen in offenders, suggesting difficulties with inhibition of prepotent behavior.
Chen
Chiao-Yun
CY
Laboratory for Cognitive Neuropsychology, National Yang-Ming University, Taipei, Taiwan. chiaoyun.chen@gmail.com
Tien
Yi-Min
YM
Juan
Chi-Hung
CH
Tzeng
Ovid J L
OJ
Hung
Daisy L
DL
D000328:Adult; D000704:Analysis of Variance; D001931:Brain Mapping; D016022:Case-Control Studies; D002755:Choice Behavior; D005071:Evoked Potentials / Q000502:physiology*; D006801:Humans; D007175:Impulsive Behavior / Q000503:physiopathology*; D008297:Male; D009483:Neuropsychological Tests; D014754:Violence