Neural correlates of feedback processing in obsessive-compulsive disorder

Area of Science:

• Neuroscience
• Cognitive Psychology
• Psychiatry

Background:

• Obsessive-compulsive disorder (OCD) is linked to hyperactive performance monitoring of self-generated actions, potentially an endophenotype.
• The role of performance monitoring in external feedback processing and learning within OCD remains unclear.

Purpose of the Study:

• To investigate electrocortical indicators of feedback processing and their impact on learning in OCD.
• To determine if feedback processing is hyperactive or compromised in OCD patients during a learning task.

Main Methods:

• Utilized a modified four-choice object reversal learning task with changing reward contingencies.
• Measured electrophysiological feedback processing correlates, specifically feedback-related negativity (FRN) and P300, in 25 OCD patients and 25 controls.

Main Results:

• OCD patients showed higher error rates, indicating deficits in behavioral adjustment following negative feedback.
• FRN amplitudes were reduced for negative feedback indicating an incorrect choice, contrasting with unchanged FRN for reversal errors.
• P300 component was not detailed in the provided abstract text.

Conclusions:

• The reduced FRN suggests attenuated feedback monitoring during learning in OCD, contributing to adaptive behavior deficits.
• This contrasts with overactive self-monitoring, indicating a dissociation in performance monitoring systems in OCD.
• Findings contribute to understanding specific alterations in action versus feedback processing systems in OCD.