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Psychophysiology· 2014Q1

The reward positivity: From basic research on reward to a biomarker for depression

Greg Hajcak

Short summary

A specific brainwave component, the Reward Positivity (RewP), is suppressed in individuals with depressive symptoms, suggesting it can serve as a biomarker for depression.

AI-generated from the title and abstract; the full text is not read.

Key points

  • The Reward Positivity (RewP) is a brainwave component associated with processing rewards.
  • RewP is suppressed or absent following non-rewarding outcomes.
  • Reduced RewP amplitude is linked to higher depressive symptoms.
  • RewP may serve as a biomarker for depression risk.

AI-generated from the title and abstract; the full text is not read.

Abstract

Feedback indicating monetary loss elicits an apparent negative deflection in the event-related potential (ERP) that has been referred to as the feedback error-related negativity, medial frontal negativity, feedback-related negativity, and feedback negativity-all conceptualizations that suggest a negative ERP component that is greater for loss than gain. In the current paper, I review a programmatic line of research indicating that this apparent negativity actually reflects a reward-related positivity (RewP) that is absent or suppressed following nonreward. I situate the RewP within a broader nomological network of reward processing and individual differences in sensitivity to rewards. Further, I review work linking reductions in the RewP to increased depressive symptoms and risk for depression. Finally, I discuss future directions for research on the RewP.

The authors' abstract, as published at the source. Psychophysiology, 2014 · DOI ↗

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