Evidence map›Paper›PMID 20495788›Full record

Trial reportPsychopharmacology2010

Dopamine precursor depletion improves punishment prediction during reversal learning in healthy females but not males.

Oliver J Robinson, Holly R Standing, Elise E DeVito, Roshan Cools, Barbara J Sahakian

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Psychopharmacology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
1.6field-weighted citation impact, top 18% 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

29 citing papers in PubMed, 47 citations in OpenAlex.

  1. Dopamine Depletion Reduces Food-Related Reward Activity Independent of BMI.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2016
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  12. Acute depletion of dopamine precursors in the human brain: effects on functional connectivity and alcohol attentional bias.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2021
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  16. The Role of Tryptophan and Tyrosine in Executive Function and Reward Processing.International journal of tryptophan research : IJTR · 2020
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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

5 authors at 3 institutions in 3 countries.

Oliver J RobinsonDepartment of Psychiatry and Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, Addenbrooke's Hospital, P.O. Box 189, Level E4, Hills Road, Cambridge, CB2 2QQ, UK. oliver.j.robinson@googlemail.com
Holly R Standing
Elise E DeVito
Roshan Cools
Barbara J Sahakian
Addenbrooke's Hospital · GBUniversity of Cambridge · GBRadboud University Nijmegen · NL

Funding

Translational Neuroscience Research in Alcoholism (TNRA-TP)T32AA015496 · NIAAA · YALE UNIVERSITY · PI PETRAKIS, ISMENE L. · 2005 to 2014
$1.6M
Medical Research Council G0001354NIAAA NIH HHS T32 AA015496NIAAA NIH HHS T32-AA015496Wellcome TrustWellcome Trust 076274/Z/04/Z
6 · The paper itself

Abstract

introductionThe neurotransmitter dopamine has frequently been implicated in reward processing but is also, increasingly, implicated in punishment processing. We have previously shown that both patients with Parkinson's disease and healthy individuals with low dopamine (DA) synthesis are better at reversal learning based on punishment than reward. Here, we extend these prior findings by examining the effects of artificially reducing DA synthesis in healthy individuals performing this previously employed task.

methodsIn a double-blind, placebo-controlled crossover design, we applied the acute tyrosine and phenylalanine depletion (ATPD) procedure to reduce global DA synthesis in 15 female and 14 male subjects. Each subject performed the reward- and punishment-based reversal-learning paradigm.

resultsThere was a significant three-way interaction between ATPD, the valence of the outcome signalling reversal and the gender of the participants. Examination of punishment and reward-based reversals separately revealed that this was driven by a significant improvement in punishment processing in female but not male subjects following DA depletion.

conclusionsReducing DA synthesis in healthy individuals shifted sensitivity of performance from reward to punishment processing. Gender differences in DA synthesis might underlie the selectivity of this effect to female subjects. Such gender biases may go some way towards explaining the gender biases in certain psychiatric disorders such as depression and Parkinson's disease.

Indexed as

PunishmentReversal LearningRewardAdultCross-Over StudiesDopamineDouble-Blind MethodFemaleHumansMaleMiddle AgedPhenylalanineSex FactorsTyrosineYoung AdultDopaminePhenylalanineTyrosine

Identifiers

PMID20495788
PMCPMC2892070
OpenAlexW2145023675

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.