Key result
Incorrect feedback increased feedback negativity irrespective of reward magnitude, whereas larger reward magnitude increased P300 amplitude irrespective of value.
Value and reward magnitude appear to be processed separately in the brain, as reflected by distinct event-related potential components (feedback negativity and P300).
Hypothesis-generating for dissociable reward processing; does not support changes in clinical feedback protocols.
Feedback negativity is a negative component of the event-related brain potential observed 250-300 ms after feedback stimuli. The present study investigated the effects of value (correct or incorrect) and reward magnitude (no, small or large) on feedback negativity and P300. Feedback negativity was larger after incorrect feedback than after correct feedback, irrespective of reward magnitude. In contrast, P300 amplitude increased with reward magnitude, irrespective of value. The amplitude of feedback negativity was correlated with a trait score of negative affect and not positive affect, whereas P300 amplitude was correlated with positive affect and not negative affect. These results suggest that value and reward magnitude are processed separately in the brain.
No takes yet. Share an insight, caveat, or question.
Sato et al. (2005) studied this question. Value (correct or incorrect) and reward magnitude was evaluated on Feedback negativity and P300 amplitude. Incorrect feedback increased feedback negativity irrespective of reward magnitude, whereas larger reward magnitude increased P300 amplitude irrespective of value.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: