Evidence map›Paper›PMID 27436230›Full record

Trial reportJournal of psychopharmacology (Oxford, England)2016

The NMDA receptor partial agonist d-cycloserine does not enhance motor learning.

Jan Günthner, Jacqueline Scholl, Elisa Favaron, Catherine J Harmer, Heidi Johansen-Berg, Andrea Reinecke

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of psychopharmacology (Oxford, England), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.7field-weighted citation impact, top 32% 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

6 citing papers in PubMed, 12 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Article
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  6. Review
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 2 countries.

Jan GünthnerDepartment of Psychiatry, University of Oxford, Oxford, UK Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health (CIMH), University of Heidelberg, Medical Faculty Mannheim, Mannheim, Germany.
Jacqueline SchollDepartment of Psychiatry, University of Oxford, Oxford, UK Department of Experimental Psychology, University of Oxford, Oxford, UK Jacqueline.scholl@cantab.net.
Elisa FavaronDepartment of Psychiatry, University of Oxford, Oxford, UK.
Catherine J HarmerDepartment of Psychiatry, University of Oxford, Oxford, UK.
Heidi Johansen-BergOxford Centre for Functional MRI of the Brain, University of Oxford, Oxford, UK.
Andrea ReineckeDepartment of Psychiatry, University of Oxford, Oxford, UK.
University of Oxford · GBWellcome Centre for Integrative Neuroimaging · GB

Funding

Medical Research Council MR/J011878/1Medical Research Council MR/N014448/1
6 · The paper itself

Abstract

rationaleThere has recently been increasing interest in pharmacological manipulations that could potentially enhance exposure-based cognitive behaviour therapy for anxiety disorders. One such medication is the partial NMDA agonist d-cycloserine. It has been suggested that d-cycloserine enhances cognitive behaviour therapy by making learning faster. While animal studies have supported this view of the drug accelerating learning, evidence in human studies has been mixed. We therefore designed an experiment to measure the effects of d-cycloserine on human motor learning.

methodsFifty-four healthy human volunteers were randomly assigned to a single dose of 250mg d-cycloserine versus placebo in a double-blind design. They then performed a motor sequence learning task.

resultsD-cycloserine did not increase the speed of motor learning or the overall amount learnt. However, we noted that participants on d-cycloserine tended to respond more carefully (shifting towards slower, but more correct responses).

conclusionThe results suggest that d-cycloserine does not exert beneficial effects on psychological treatments via mechanisms involved in motor learning. Further studies are needed to clarify the influence on other cognitive mechanisms.

Indexed as

AdultAnxiety DisordersCognitionCognitive Behavioral TherapyCycloserineDouble-Blind MethodFemaleHumansLearningMaleMotor ActivityReceptors, N-Methyl-D-AspartateYoung AdultCycloserineReceptors, N-Methyl-D-Aspartated-cycloserinemotor learningNMDA

Identifiers

PMID27436230
PMCPMC5066480
OpenAlexW2494404989

What OpenQuestion holds

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Registered trials

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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.