Cited by 216Bipolar Disorder and TreatmentSchizophrenia research and treatmentNeurotransmitter Receptor Influence on Behavior

Abnormal Reward System Activation in Mania

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Abler, Birgit, Greenhouse, Ian, Ongur, Dost, Walter, Henrik, Heckers, Stephan·2008·Neuropsychopharmacology

Abstract

Transmission of reward signals is a function of dopamine, a neurotransmitter known to be involved in the mechanism of psychosis. Using functional magnetic resonance imaging (fMRI), we investigated how expectation and receipt of monetary rewards modulate brain activation in patients with bipolar mania and schizophrenia. We studied 12 acutely manic patients with a history of bipolar disorder, 12 patients with a current episode of schizoaffective disorder or schizophrenia and 12 healthy subjects. All patients were treated with dopamine antagonists at the time of the study. Subjects performed a delayed incentive paradigm with monetary reward in the scanner that allowed for investigating effects of expectation, receipt, and omission of rewards. Patients with schizophrenia and healthy control subjects showed the expected activation of dopaminergic brain areas, that is, ventral tegmentum activation upon expectation of monetary rewards and nucleus accumbens activation during receipt vs omission of rewards. In manic patients, however, we did not find a similar pattern of brain activation and the differential signal in the nucleus accumbens upon receipt vs omission of rewards was significantly lower compared to the healthy control subjects. Our findings provide evidence for abnormal function of the dopamine system during receipt or omission of expected rewards in bipolar disorder. These deficits in prediction error processing in acute mania may help to explain symptoms of disinhibition and abnormal goal pursuit regulation.

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Authors
Abler, B., Greenhouse, I., Ongur, D., Walter, H., & Heckers, S.
Affiliations
  • Universität Ulm (DE)
  • University of California, San Francisco (US)
  • University of Bonn (DE)
  • Vanderbilt University (US)
Corresponding author
Abler, Birgit
Venue
Neuropsychopharmacology
Published
2007-11-07
Volume
33
Issue
9
Pages
2217-2227
ISSN
  • 0893-133X (ISSN-L)
  • 1740-634X
OpenAlex
W2045088017
Cited by
216
References
48
Citations by year
2026: 2 · 2025: 11 · 2024: 3 · 2023: 6 · 2022: 8 · 2021: 31 · 2020: 11 · 2019: 9 · 2018: 8 · 2017: 15 · 2016: 9 · 2015: 15 · 2014: 14 · 2013: 15 · 2012: 16
FWCI
6.04
Type
journal article
Language
en
Open access
Locations
  • Neuropsychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5r01mh070560-16)
  • National Institute of Mental Health (R01-MH070560, R01MH094594)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
mania, bipolar disorder, schizophrenia, reward processing, dopaminergic system, nucleus accumbens, ventral tegmental area, prediction error, monetary rewards, dopamine antagonists, disinhibition, goal pursuit
MeSH terms
Adult, Bipolar Disorder, Brain, Brain Mapping, Female, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Middle Aged, Neural Pathways, Oxygen, Psychiatric Status Rating Scales, Psychological Tests, Reaction Time, Reward, Schizophrenia

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