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Structural Differences in Insular Cortex Reflect Vicarious Injustice Sensitivity.

Thomas Baumgartner¹, Anne Saulin¹, Grit Hein¹

¹Department of Social Psychology and Social Neuroscience, Institute of Psychology, University of Bern, Bern, Switzerland.

|December 9, 2016

Summary

This summary is machine-generated.

Individual differences in sensitivity to injustice are linked to brain structure. Larger gray matter volume and thickness in the mid insular cortex correlate with higher vicarious injustice sensitivity.

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Area of Science:

Neuroscience
Social Psychology
Neuroanatomy

Background:

Sensitivity to injustice in others (vicarious injustice sensitivity) varies greatly among individuals.
Understanding the neuroanatomical basis of these individual differences is crucial for explaining heterogeneous social behavior.

Purpose of the Study:

To investigate the neuroanatomical correlates of individual differences in vicarious injustice sensitivity.
To identify specific brain structures associated with the propensity to be affected by witnessing injustice.

Main Methods:

Utilized voxel-based morphometry and Freesurfer image analysis suite for whole-brain corrected analyses.
Examined the relationship between gray matter volume, thickness, and individual sensitivity to vicarious injustice.

Main Results:

Gray matter volume and thickness of the bilateral mid insular cortex significantly correlated with vicarious injustice sensitivity.
Greater gray matter volume and thickness in the mid insula were associated with higher sensitivity to injustice experienced by others.

Conclusions:

The neuroanatomy of the mid insular cortex underpins individual differences in vicarious injustice sensitivity.
These findings provide a structural basis for understanding how individuals process vicarious experiences of injustice, complementing functional studies.