Anterior cingulate cortex responds differentially to expectancy violation and social rejection

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Social Neuroscience

Background:

• The anterior cingulate cortex (ACC) is implicated in various cognitive and emotional processes.
• Distinguishing neural responses to expectancy violations versus social feedback is crucial for understanding social cognition.

Purpose of the Study:

• To investigate the distinct roles of the dorsal and ventral ACC in processing expectancy violations and social feedback.
• To dissociate neural mechanisms underlying expectation fulfillment/violation from those involved in social evaluation.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used in two separate studies.
• Participants made social judgments and received simulated positive or negative feedback, varying in consistency with their expectations.

Main Results:

• The dorsal ACC showed increased activation when feedback violated participants' expectations, irrespective of social valence.
• The ventral ACC exhibited differential responses to the social nature of the feedback, independent of expectancy congruence.

Conclusions:

• The dorsal ACC is specifically involved in detecting and signaling expectancy violations.
• The ventral ACC plays a distinct role in processing the social significance of feedback, differentiating it from mere prediction errors.