Evidence map›Paper›PMID 29748629›Full record

ArticleNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2018

Abnormal reward prediction-error signalling in antipsychotic naive individuals with first-episode psychosis or clinical risk for psychosis.

Anna O Ermakova, Franziska Knolle, Azucena Justicia, Edward T Bullmore, Peter B Jones, Trevor W Robbins, Paul C Fletcher, Graham K Murray

Open access · hybridAbstract read
In one paragraph

Article in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 1 pooled it
5.9field-weighted citation impact, top 3% 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

50 citing papers in PubMed, 1 synthesis or guideline pooled it, 92 citations in OpenAlex.

  1. Pooled it
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  15. The Placebo Effect in Psychosis: Why It Matters and How to Measure It.Biological psychiatry global open science · 2023
    Review
  16. Article
  17. Reinforcement learning deficits exhibited by postnatal PCP-treated rats enable deep neural network classification.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2023
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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

8 authors at 1 institution in 1 country.

Anna O ErmakovaDepartment of Psychiatry, University of Cambridge, Cambridge, UK.ORCID http://orcid.org/0000-0002-1869-0084
Franziska KnolleDepartment of Psychiatry, University of Cambridge, Cambridge, UK.ORCID http://orcid.org/0000-0002-9542-613X
Azucena JusticiaDepartment of Psychiatry, University of Cambridge, Cambridge, UK.
Edward T BullmoreDepartment of Psychiatry, University of Cambridge, Cambridge, UK.ORCID http://orcid.org/0000-0002-8955-8283
Peter B JonesDepartment of Psychiatry, University of Cambridge, Cambridge, UK.ORCID http://orcid.org/0000-0002-0387-880X
Trevor W RobbinsBehavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, UK.
Paul C FletcherDepartment of Psychiatry, University of Cambridge, Cambridge, UK.
Graham K MurrayDepartment of Psychiatry, University of Cambridge, Cambridge, UK. gm285@cam.ac.uk.
University of Cambridge · GB

Funding

Medical Research Council G0001354Medical Research Council G0701911Medical Research Council G1000183Wellcome Trust
6 · The paper itself

Abstract

Ongoing research suggests preliminary, though not entirely consistent, evidence of neural abnormalities in signalling prediction errors in schizophrenia. Supporting theories suggest mechanistic links between the disruption of these processes and the generation of psychotic symptoms. However, it is unknown at what stage in the pathogenesis of psychosis these impairments in prediction-error signalling develop. One major confound in prior studies is the use of medicated patients with strongly varying disease durations. Our study aims to investigate the involvement of the meso-cortico-striatal circuitry during reward prediction-error signalling in earliest stages of psychosis. We studied patients with first-episode psychosis (FEP) and help-seeking individuals at-risk for psychosis due to sub-threshold prodromal psychotic symptoms. Patients with either FEP (n = 14), or at-risk for developing psychosis (n = 30), and healthy volunteers (n = 39) performed a reinforcement learning task during fMRI scanning. ANOVA revealed significant (p < 0.05 family-wise error corrected) prediction-error signalling differences between groups in the dopaminergic midbrain and right middle frontal gyrus (dorsolateral prefrontal cortex, DLPFC). FEP patients showed disrupted reward prediction-error signalling compared to controls in both regions. At-risk patients showed intermediate activation in the midbrain that significantly differed from controls and from FEP patients, but DLPFC activation that did not differ from controls. Our study confirms that FEP patients have abnormal meso-cortical signalling of reward-prediction errors, whereas reward-prediction-error dysfunction in the at-risk patients appears to show a more nuanced pattern of activation with a degree of midbrain impairment but preserved cortical function.

Indexed as

RewardAnticipation, PsychologicalBrainBrain MappingFemaleHumansMagnetic Resonance ImagingMaleNeural PathwaysProdromal SymptomsPsychotic DisordersRiskYoung Adult

Identifiers

PMID29748629
PMCPMC6006166
OpenAlexW2767721831

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.