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48. Neural processing of monetary incentives predicts real world momentary affect
Alterations in reward anticipation and feedback processing are implicated in various disorders. We investigated how responses to rewards measured by electroencephalogram (EEG) in laboratory tasks predict daily life experiences of emotion. Young adults (N=28) completed a monetary incentive delay task, which measures event-related potentials (ERPs) in response to anticipatory and consummatory processing of reward. To measure affect in natural settings, ecological momentary assessment (EMA) surveys were administered through participants’ personal cell phones 8 times per day for 1 week. Participants with heightened neural responses to monetary cues (cue-P3) reported increased nervousness in daily life, possibly indicating that heightened anticipation over performance appears to predict overall agitation. Heightened neural responses in anticipation of incentives (stimulus-preceding negativity; SPN), was associated with increased interest in daily life. On the other hand, responsiveness to reward feedback (reward positivity; RewP) was negatively correlated with excitement. Difference score analyses indicated that those who reported more excitement showed reduced differentiation between reward and loss feedback, suggesting that those who feel heightened excitement might have a high threshold for responding to rewarding events. This multimodal assessment can be applied to determine how abnormal reward processing arising at distinct stages can predict momentary mood in clinical populations.