Evidence map›Paper›PMID 19741594›Full record

Trial reportNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2009

Dopamine agonists diminish value sensitivity of the orbitofrontal cortex: a trigger for pathological gambling in Parkinson's disease?

Thilo van Eimeren, Bénédicte Ballanger, Giovanna Pellecchia, Janis M Miyasaki, Anthony E Lang, Antonio P Strafella

Open access · greenAbstract readClinical Trial
In one paragraph

Trial report in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers.

0numbers the graph read from it
0cells of the map it votes in
77citing papers in PubMed
10.4field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

77 citing papers in PubMed, 144 citations in OpenAlex.

  1. Trial
  2. Dopamine Receptor-Specific Contributions to the Computation of Value.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2018
    Trial
  3. Trial
  4. Dopaminergic influences on emotional decision making in euthymic bipolar patients.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2014
    Trial
  5. Trial
  6. Trial
  7. Trial
  8. Amping up effort: effects of d-amphetamine on human effort-based decision-making.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2011
    Trial
  9. Review
  10. Impulse control and related behavioral disorders in Parkinson's disease. Risk factors, diagnosis, and management. Is there a possible role for non-invasive brain stimulation?Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. The Contribution of Type 2 Diabetes to Parkinson's Disease Aetiology.International journal of molecular sciences · 2024
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review

17 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Thilo van EimerenDivision of Brain, Imaging and Behaviour-Systems Neuroscience, BIB-SN, Toronto Western Research Institute, University of Toronto, Toronto, ON, Canada.
Bénédicte Ballanger
Giovanna Pellecchia
Janis M Miyasaki
Anthony E Lang
Antonio P Strafella
University of Toronto · CAToronto Western Hospital · CA

Funding

CIHR 64423CIHR MOP-64423
6 · The paper itself

Abstract

The neurobehavioral underpinnings of pathological gambling are not well understood. Insight might be gained by understanding pharmacological effects on the reward system in patients with Parkinson's disease (PD). Treatment with dopamine agonists (DAs) has been associated with pathological gambling in PD patients. However, how DAs are involved in the development of this form of addiction is unknown. We tested the hypothesis that tonic stimulation of dopamine receptors specifically desensitizes the dopaminergic reward system by preventing decreases in dopaminergic transmission that occurs with negative feedback. Using functional magnetic resonance imaging, we studied PD patients during three sessions of a probabilistic reward task in random order: off medication, after levodopa (LD) treatment, and after an equivalent dose of DA (pramipexole). For each trial, a reward prediction error value was computed using outcome, stake, and probability. Pramipexole specifically changed activity of the orbitofrontal cortex (OFC) in two ways that were both associated with increased risk taking in an out-of-magnet task. Outcome-induced activations were generally higher with pramipexole compared with LD or off medication. In addition, only pramipexole greatly diminished trial-by-trial correlation with reward prediction error values. Further analysis yielded that this resulted mainly from impaired deactivation in trials with negative errors in reward prediction. We propose that DAs prevent pauses in dopamine transmission and thereby impair the negative reinforcing effect of losing. Our findings raise the question of whether pathological gambling may in part stem from an impaired capacity of the OFC to guide behavior when facing negative consequences.

Indexed as

RewardBenzothiazolesDopamine AgonistsFrontal LobeGamblingHumansLevodopaMagnetic Resonance ImagingMaleMiddle AgedParkinson DiseasePramipexolePsychomotor PerformanceRisk-TakingBenzothiazolesDopamine AgonistsLevodopaPramipexole

Identifiers

PMID19741594
PMCPMC2972251
OpenAlexW2045121292

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.