Dorsal Anterior Cingulate Cortices Differentially Lateralize Prediction Errors and Outcome Valence in a...

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Computational Neuroscience

Background:

• The dorsal anterior cingulate cortex (dACC) is theorized to support learning by processing prediction errors and outcome valence.
• Direct electrophysiological evidence from the human dACC for these distinct functions has been lacking.

Purpose of the Study:

• To investigate the electrophysiological correlates of prediction error and outcome valence in the human dACC.
• To validate the separate yet integrated roles of the dACC in decision-making and behavioral monitoring.

Main Methods:

• Utilized local field potentials (LFPs) recorded from the dACC during deep brain stimulation (DBS) surgery in three human subjects.
• Employed a cognitive task involving object-pair presentation, motor response, and audiovisual feedback.

Main Results:

• Observed lateralized theta frequency (3-8 Hz) event-related potentials in the dACC.
• Left hemisphere dACC signaled outcome valence and prediction errors, while the right hemisphere dACC was involved in prediction formation.
• Multivariate analyses indicated distinct early and late processing systems within the dACC, supporting theta activity's role in cognitive processing.

Conclusions:

• The human dACC exhibits lateralized theta activity, distinguishing roles in prediction and outcome evaluation.
• dACC processing reflects distinct early and late systems crucial for behavioral monitoring, not motor control.