Cited by 23Neurotransmitter Receptor Influence on BehaviorNeural and Behavioral Psychology StudiesSchizophrenia research and treatment

Anhedonia modulates the effects of positive mood induction on reward-related brain activation

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Green, Isobel W., Pizzagalli, Diego A., Admon, Roee, Kumar, Poornima·2019·NeuroImage

Abstract

Blunted activation in the reward circuitry has been associated with anhedonia, the inability to experience pleasure in previously rewarding activities. In healthy individuals, reward-related activation has been found to be modulated by acute contextual factors such as induced positive mood. Accordingly, blunted reward response in anhedonia might involve a failure to appropriately modulate reward-related activation as a function of context. To test this hypothesis, 29 participants (19 females, mean age of 24.14 ± 4.61, age range 18-34), with a wide range of anhedonic symptoms, underwent functional MRI while anticipating and receiving monetary rewards, before and after a positive mood induction. Change in neural activation from before to after mood induction was quantified, and effects of anhedonia were investigated through whole-brain, ROI, and functional connectivity analyses. Contrary to hypotheses, results indicated that during reward anticipation (but not receipt), nucleus accumbens activation decreased while its connectivity with the dorsolateral prefrontal cortex increased, following positive mood induction. Critically, anhedonia modulated both effects. The unexpected finding of decreased activation to reward cues following positive mood induction is compelling as it aligns with a prominent behavioral model of the effect of positive mood on exploration of rewarding and neutral stimuli. Furthermore, the modulation of this effect by anhedonia suggests that it may be a key process altered in anhedonia.

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Crossref · 10.1016/j.neuroimage.2019.02.063

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  • Human prefrontal activity increases more for happy stimuli than for sad stimuli.

    “Activity in the human PFC is increased by 'happy' stimuli to a greater extent than it is for 'sad' stimuli and these responses are altered in depressed and anhedonic patients [180-182], consistent with alterations in PFC circuit function.”
  • Prefrontal responses to happy and sad stimuli are altered in depressed and anhedonic patients.

    “Activity in the human PFC is increased by 'happy' stimuli to a greater extent than it is for 'sad' stimuli and these responses are altered in depressed and anhedonic patients [180-182], consistent with alterations in PFC circuit function.”
  • These altered prefrontal responses are consistent with altered prefrontal circuit function.

    “Activity in the human PFC is increased by 'happy' stimuli to a greater extent than it is for 'sad' stimuli and these responses are altered in depressed and anhedonic patients [180-182], consistent with alterations in PFC circuit function.”

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Research works printed but not linked: 1

  1. Pizzagalli DA, Holmes AJ, Dillon DG, Goetz EL, Birk JL, Bogdan R, … Fava M (2009b). Reduced Caudate and Nucleus Accumbens Response to Rewards in Unmedicated Individuals With Major Depressive Disorder. American Journal of Psychiatry, 166(6), 702– 710. 19411368 PMC2735451

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Authors
Green, I. W., Pizzagalli, D. A., Admon, R., & Kumar, P.
Affiliations
  • Harvard University (US)
  • University of Haifa (IL)
Corresponding author
Kumar, Poornima
Venue
NeuroImage
Publisher
Elsevier BV
Published
2019-06
Volume
193
Pages
115-125
ISSN
1053-8119 (ISSN-L)
OpenAlex
W2919482664
Cited by
23
References
60
Citations by year
2026: 2 · 2025: 1 · 2024: 2 · 2023: 3 · 2022: 4 · 2021: 7 · 2020: 3 · 2019: 1
FWCI
1.79
Type
journal article
Language
en
Open access
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Harvard College Research Program
  • Herchel Smith Undergraduate Science Research Program
  • Harvard College Program for Research in Science and Engineering (R37 MH068376, R01 MH101521)
  • Brain and Behavior Foundation (formerly NARSAD) Young Investigator award (R21 MH105775)
  • NIH Shared Instrumentation (S10OD020039)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
Keywords
anhedonia, reward anticipation, reward processing, nucleus accumbens, dorsolateral prefrontal cortex, functional connectivity
MeSH terms
Adolescent, Adult, Affect, Brain, Female, Humans, Male, Neural Pathways, Reward, Young Adult, Pleasure, Anhedonia

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