Volume 47, Issue 10 p. 1031-1040

Reward-related decision-making in pediatric major depressive disorder: an fMRI study

Erika E. Forbes

Erika E. Forbes

University of Pittsburgh, USA

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J. Christopher May

J. Christopher May

University of Pittsburgh, USA

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Greg J. Siegle

Greg J. Siegle

University of Pittsburgh, USA

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Cecile D. Ladouceur

Cecile D. Ladouceur

University of Pittsburgh, USA

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Neal D. Ryan

Neal D. Ryan

University of Pittsburgh, USA

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Cameron S. Carter

Cameron S. Carter

University of Pittsburgh, USA

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Boris Birmaher

Boris Birmaher

University of Pittsburgh, USA

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David A. Axelson

David A. Axelson

University of Pittsburgh, USA

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Ronald E. Dahl

Ronald E. Dahl

University of Pittsburgh, USA

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First published: 26 October 2006
Citations: 218
Erika E. Forbes, University of Pittsburgh School of Medicine, E-731 Western Psychiatric Institute and Clinic, 3811 O'Hara Street, Pittsburgh, PA 15218, USA; Email: [email protected]

Conflict of interest statement: No conflicts declared.

Abstract

Background: Although reward processing is considered an important part of affective functioning, few studies have investigated reward-related decisions or responses in young people with affective disorders. Depression is postulated to involve decreased activity in reward-related affective systems.

Methods: Using functional magnetic resonance imaging (fMRI), we examined behavioral and neural responses to reward in young people with depressive disorders using a reward decision-making task. The task involved choices about possible rewards involving varying magnitude and probability of reward. The study design allowed the separation of decision/anticipation and outcome phases of reward processing. Participants were 9–17 years old and had diagnoses of major depressive disorder (MDD), anxiety disorders, or no history of psychiatric disorder.

Results: Participants with MDD exhibited less neural response than control participants in reward-related brain areas during both phases of the task. Group differences did not appear to be a function of anxiety. Depressive and anxiety symptoms were associated with activation in reward-related brain areas.

Conclusions: Results suggest that depression involves altered reward processing and underscore the need for further investigation of relations among development, affective disorders, and reward processing.