Citation

Moran JK, Weierstall R, Elbert T. Front. Behav. Neurosci. 2014; 8: 425.

Affiliation

Department of Psychology, University of Konstanz Konstanz, Germany.

Copyright

(Copyright © 2014, Frontiers Research Foundation)

DOI

10.3389/fnbeh.2014.00425

PMID

25538590

Abstract

Aggressive behavior is thought to divide into two motivational elements: The first being a self-defensively motivated aggression against threat and a second, hedonically motivated "appetitive" aggression. Appetitive aggression is the less understood of the two, often only researched within abnormal psychology. Our approach is to understand it as a universal and adaptive response, and examine the functional neural activity of ordinary men (N = 50) presented with an imaginative listening task involving a murderer describing a kill. We manipulated motivational context in a between-subjects design to evoke appetitive or reactive aggression, against a neutral control, measuring activity with Magnetoencephalography (MEG).

RESULTS show differences in left frontal regions in delta (2-5 Hz) and alpha band (8-12 Hz) for aggressive conditions and right parietal delta activity differentiating appetitive and reactive aggression. These results validate the distinction of reward-driven appetitive aggression from reactive aggression in ordinary populations at the level of functional neural brain circuitry.

Language: en