Independent Neural Computation of Value from Other People's Confidence

Area of Science:

• Neuroscience
• Cognitive Science
• Social Psychology

Background:

• The ventromedial prefrontal cortex (vmPFC) is known to signal expected satisfaction from actions.
• Understanding the precise organization of value representation within the vmPFC is limited.
• Social cues, like others' confidence, can influence personal decision-making and reward expectations.

Purpose of the Study:

• To investigate how first-hand experience and social information (others' choices and confidence) influence decision-making.
• To identify the neural correlates of value computation in the vmPFC.
• To explore the anatomical suborganization of value representation based on computational demands.

Main Methods:

• Utilized functional magnetic resonance imaging (fMRI) in 23 healthy subjects.
• Isolated the effects of direct experience, observed choices, and observed confidence on value representation.
• Analyzed decision-making behavior and correlated it with self-reported social decision-making tendencies.

Main Results:

• Value from direct experience and others' choices (regardless of confidence) were represented broadly across the vmPFC.
• Value derived from others' choices weighted by their confidence was specifically localized to ventromedial area 10.
• Behavioral measures of self-reliance and conformity correlated with specific patterns of brain activation.

Conclusions:

• Value representation in the vmPFC is anatomically suborganized based on computational processes, distinguishing between direct and socially inferred value.
• Observed confidence from others specifically modulates value computation in a distinct vmPFC subregion.
• Findings provide insight into the neural basis of social learning and the influence of social reassurance on decision-making.