Journal
PSYCHOPHYSIOLOGY
Volume 44, Issue 6, Pages 913-917Publisher
BLACKWELL PUBLISHING
DOI: 10.1111/j.1469-8986.2007.00561.x
Keywords
feedback error-related negativity; reward prediction error; time estimation task; reinforcement learning
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The feedback error-related negativity (fERN) is a component of the human event-related brain potential (ERP) elicited by feedback stimuli. A recent theory holds that the fERN indexes a reward prediction error signal associated with the adaptive modi. cation of behavior. Here we present behavioral and ERP data recorded from participants engaged in a modified time estimation task. As predicted by the theory, our results indicate that fERN amplitude reflects a reward prediction error signal and that the size of this error signal is correlated across participants with changes in task performance.
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