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Event-related brain potentials (ERPs) elicited by gains and losses in the monetary gambling task. A. Grand-averaged waveforms for loss trials (red), gain trials (green), and the difference wave (blue) showing the Feedback-Related Negativity (FRN). B. Scalp potential map showing topographical distribution of the FRN. The ERP signal is bi-mastoid referenced, and −200ms–0ms baselined.
