The brain correlates of state proactive aggression.

OBJECTIVE

Proactive aggression can result in many economic, social, and health problems. It has two levels: trait and state. Although the neural basis of trait proactive aggression is becoming clearer, the neural basis of state proactive aggression has been largely ignored and remains unclear.

METHOD

We explore the basic brain correlates of state proactive aggression using a reward-interference task (RIT), in which participants play a competitive reactive time task against an opponent. They can make decision to give the opponent noise interference for winning the game and gaining reward or not. Forty healthy participants from a university in China performed the RIT in the scanner and their functional images were obtained on a 3.0-T Siemens Tim Trio scanner. Finally, 38 participants (21 males, M age = 19.24, SD = 1.32) were included in analyses.

RESULTS

The results show that relative to the baseline, the medial prefrontal cortex (MPFC), anterior cingulate cortex (ACC), temporoparietal junction (TPJ), and inferior frontal gyrus (IFG) were activated by aggression selection and nonaggression selection in the RIT. Furthermore, relative to nonaggression selection, the MPFC, ACC, TPJ, IFG, middle cingulate cortex (MCC), and middle temporal gyrus (MTG) were more strongly activated during aggression selection and correlated with the scores of some of the three basic proactive aggression motivations (instrumental motivation, moral inhibition motivation, and moral approval motivation).

CONCLUSION

The results provide preliminary evidence of neural correlates for state proactive aggression and should be replicated by other methods or with other samples. (PsycInfo Database Record (c) 2022 APA, all rights reserved).