The precuneus and the insula in self-attributional processes.

Area of Science:

• Neuroscience
• Social Psychology
• Cognitive Science

Background:

• Self-serving bias is a common attributional phenomenon where individuals attribute successes internally and failures externally.
• Understanding the neural mechanisms underlying self-serving attributions is crucial for comprehending social cognition and emotional regulation.

Purpose of the Study:

• To investigate the neural correlates of self-serving attributions in social situations with varying emotional salience.
• To identify specific brain regions associated with attributing positive and negative social events to oneself versus external factors.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used to scan 71 healthy subjects performing an attributional bias task.
• Participants evaluated 80 sentences describing positive or negative social situations, attributing causality to themselves or others.
• Statistical analysis identified brain activations correlated with different attributional conditions and emotional valences.

Main Results:

• Bilateral posterior cingulate cortex (PCC) activation was observed when comparing positive versus negative sentences.
• Self-attribution of events correlated with activation in the posterior precuneus.
• Attributing positive events to self activated the anterior precuneus, while attributing negative events to self activated the bilateral insular cortex.
• Convergent validity was confirmed by comparing fMRI data with the Internal, Personal and Situational Attributions Questionnaire.

Conclusions:

• The precuneus and PCC are involved in evaluating social events, with distinct regional specializations for emotional and attributional processing.
• The posterior precuneus is linked to attributional evaluation, and the anterior precuneus to self-serving processes.
• Insula activation may reflect awareness of personal agency, particularly in negative social situations.