Physical aggressiveness and gray matter deficits in ventromedial prefrontal cortex

David S. Chester, Donald R. Lynam, Richard Milich, C. Nathan DeWall

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

What causes individuals to hurt others? Since the famous case of Phineas Gage, lesions of the ventromedial prefrontal cortex (VMPFC) have been reliably linked to physically aggressive behavior. However, it is unclear whether naturally-occurring deficits in VMPFC, among normal individuals, might have widespread consequences for aggression. Using voxel based morphometry, we regressed gray matter density from the brains of 138 normal female and male adults onto their dispositional levels of physical aggression, verbal aggression, and sex, simultaneously. Physical, but not verbal, aggression was associated with reduced gray matter volume in the VMPFC and to a lesser extent, frontopolar cortex. Participants with less gray matter density in this VMPFC cluster were much more likely to engage in real-world violence. These findings suggest that even granular deficits in normal individuals’ VMPFC gray matter can promote physical aggression.

Original languageEnglish
Pages (from-to)17-22
Number of pages6
JournalCortex
Volume97
DOIs
StatePublished - Dec 2017

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd

Keywords

  • Aggression
  • Gray matter
  • Ventromedial prefrontal cortex
  • Voxel based morphometry

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Cognitive Neuroscience

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