Cited by 69Treatment of Major DepressionNeurotransmitter Receptor Influence on BehaviorNeural and Behavioral Psychology Studies

Circuits regulating pleasure and happiness in major depression

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Loonen, A.J.M., Ivanova, S.A.·2016·Medical Hypotheses

Abstract

The introduction of selective serotonin reuptake inhibitors has gradually changed the borders of the major depression disease class. Anhedonia was considered a cardinal symptom of endogenous depression, but the potential of selective serotonin reuptake inhibitors to treat anxiety disorders has increased the relevance of stress-induced morbidity. This shift has led to an important heterogeneity of current major depressive disorder. The complexity can be disentangled by postulating the existence of two different but mutually interacting neuronal circuits regulating the intensity of anhedonia (lack of pleasure) and dysphoria (lack of happiness). These circuits are functionally dominated by partly closed limbic (regulating misery-fleeing behaviour) and extrapyramidal (regulating reward-seeking behaviour) cortico-striato-thalamo-cortical (CSTC) circuits. The re-entry circuits include the shell and core parts of the accumbens nucleus, respectively. Pleasure can be considered to result from finding relief from the hypermotivation to exhibit rewarding behaviour, and happiness from finding relief from negative or conflicting circumstances. Hyperactivity of the extrapyramidal CSTC circuit results in craving, whereas hyperactivity of the limbic system results in dysphoria.

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Authors
Loonen, A. J. M., & Ivanova, S. A.
Affiliations
University of Groningen (NL)
Corresponding author
Loonen, A.J.M.
Venue
Medical Hypotheses
Publisher
Elsevier BV
Published
2016-02
Volume
87
Pages
14-21
ISSN
0306-9877 (ISSN-L)
OpenAlex
W2234540276
Cited by
69
References
62
Citations by year
2026: 2 · 2025: 3 · 2024: 4 · 2023: 7 · 2022: 7 · 2021: 10 · 2020: 9 · 2019: 11 · 2018: 4 · 2017: 8 · 2016: 4
FWCI
3.84
Type
journal article
Language
en
Open access
Locations
  • Medical Hypotheses (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion, cc-by)
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
major depressive disorder, anhedonia, dysphoria, pleasure, happiness, neural circuits, cortico-striato-thalamo-cortical circuit, limbic system, extrapyramidal system, nucleus accumbens, reward-seeking behavior, craving, stress-induced depression, selective serotonin reuptake inhibitors, depression heterogeneity
MeSH terms
Major Depressive Disorder, Extrapyramidal Tracts, Happiness, Humans, Limbic System, Models, Neurological, Models, Psychological, Neural Pathways, Selective Serotonin Reuptake Inhibitors, Pleasure

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