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Feedback-Related Negativity and its Clinical Implications
Abstract
Appropriate processing of feedback information is critical for human executive functions that guide goal-oriented behavior. Feedback-related negativity (FRN) measurements are feedback signals that are recorded through the scalp and convey unpredicted bad/negative information. This study attempts to characterize FRN in the context of individual psychological disposition, specifically impulsivity. The results show that non-planning individuals produce smaller FRN signals than planning individuals when performing both monetary (experiment 1) and non-monetary (experiment 2) gambling tasks, suggesting that impulsive individuals are prone to make risky choices and to show less evaluation processing and lower negative feedback. Furthermore, the clinical utility of FRN measurements was examined with regard to assessing frontal lobe functions in patients with brain lesions. Reductions in FRN amplitudes in response to go-nogo tasks were associated with impaired inhibition responses. These findings suggest that FRN measurements are useful for electrophysiological assessments of patients with impaired inhibitory control.
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