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Right dorsolateral prefrontal cortex regulates default prosociality preference.

Hiroki Tanaka1, Qiulu Shou2, Toko Kiyonari3

  • 1Brain Science Institute, Tamagawa University, 6-1-1 Tamagawagakuen, Machida, Tokyo, 194-8610, Japan.

Cerebral Cortex (New York, N.Y. : 1991)
|November 17, 2022
PubMed
Summary
This summary is machine-generated.

The right dorsolateral prefrontal cortex

Keywords:
brain structuredorsolateral prefrontal cortexeconomic gamesocial value orientationvoxel-based morphometry

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Area of Science:

  • Neuroscience
  • Social Psychology
  • Behavioral Economics

Background:

  • The dorsolateral prefrontal cortex (dlPFC) is linked to prosocial behavior, but the nature of this association is debated.
  • Existing research shows conflicting results regarding the dlPFC's role in prosociality.

Purpose of the Study:

  • To investigate the moderating role of default prosociality preference on the relationship between dlPFC gray matter volume and prosocial behavior.
  • To resolve inconsistencies in the literature concerning the dlPFC-prosocial behavior link.

Main Methods:

  • Voxel-based morphometry (VBM) was used to analyze gray matter volume in 168 participants.
  • Participants engaged in four types of economic games to assess prosocial behavior.
  • Three distinct measures of social value orientation were employed to quantify default prosociality preference.

Main Results:

  • In individuals consistently classified as 'proself' (self-interested), greater gray matter volume in the right dlPFC correlated positively with prosocial behavior.
  • Conversely, in individuals consistently classified as 'prosocial', greater right dlPFC gray matter volume correlated negatively with prosocial behavior.

Conclusions:

  • The findings suggest that the right dorsolateral prefrontal cortex plays a regulatory role in modulating default prosociality preference.
  • Individual differences in prosociality preference influence how right dlPFC structure relates to actual prosocial actions.