Evidence map›Paper›PMID 28691905›Full record

ArticleeLife2017

Effects of dopamine on reinforcement learning and consolidation in Parkinson's disease.

John P Grogan, Demitra Tsivos, Laura Smith, Brogan E Knight, Rafal Bogacz, Alan Whone, Elizabeth J Coulthard

Abstract read
In one paragraph

Article in eLife, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
–field-weighted citation impact
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

33 citing papers in PubMed.

  1. Trial
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  5. Review
  6. Selective Effects of Substantia Nigra and Locus Coeruleus Degeneration on Cognition in Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2025
    Article
  7. Review
  8. Article
  9. Article
  10. Article
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  19. Retention of Value Representations Across Time in People With Schizophrenia and Healthy Control Subjects.Biological psychiatry. Cognitive neuroscience and neuroimaging · 2021
    Article
  20. Article
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

7 authors.

John P GroganInstitute of Clinical Neurosciences, School of Clinical Sciences, University of Bristol, Bristol, United Kingdom.ORCID 0000-0002-0463-8904
Demitra TsivosClinical Neurosciences, North Bristol NHS Trust, Bristol, United Kingdom.
Laura SmithInstitute of Clinical Neurosciences, School of Clinical Sciences, University of Bristol, Bristol, United Kingdom.
Brogan E KnightClinical Neurosciences, North Bristol NHS Trust, Bristol, United Kingdom.
Rafal BogaczMRC Brain Network Dynamics Unit, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom.
Alan WhoneInstitute of Clinical Neurosciences, School of Clinical Sciences, University of Bristol, Bristol, United Kingdom.
Elizabeth J CoulthardInstitute of Clinical Neurosciences, School of Clinical Sciences, University of Bristol, Bristol, United Kingdom.

Funding

Medical Research Council MC UU 12024/5Medical Research Council MC_UU_12024/5Wellcome Trust SJ1102
6 · The paper itself

Abstract

Emerging evidence suggests that dopamine may modulate learning and memory with important implications for understanding the neurobiology of memory and future therapeutic targeting. An influential hypothesis posits that dopamine biases reinforcement learning. More recent data also suggest an influence during both consolidation and retrieval. Eighteen Parkinson's disease patients learned through feedback ON or OFF medication, with memory tested 24 hr later ON or OFF medication (4 conditions, within-subjects design with matched healthy control group). Patients OFF medication during learning decreased in memory accuracy over the following 24 hr. In contrast to previous studies, however, dopaminergic medication during learning and testing did not affect expression of positive or negative reinforcement. Two further experiments were run without the 24 hr delay, but they too failed to reproduce effects of dopaminergic medication on reinforcement learning. While supportive of a dopaminergic role in consolidation, this study failed to replicate previous findings on reinforcement learning.

Indexed as

Reinforcement, PsychologyAgedDopamine AgentsFemaleHumansMaleMemoryParkinson DiseaseTreatment OutcomeDopamine AgentsdopaminehumanneuroscienceParkinson's diseasereinforcement learningreward

Identifiers

PMID28691905
PMCPMC5531832

What OpenQuestion holds

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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.