Evidence map›Paper›PMID 24329936›Full record

ArticleAddiction (Abingdon, England)2014

Striatum and insula dysfunction during reinforcement learning differentiates abstinent and relapsed methamphetamine-dependent individuals.

Jennifer L Stewart, Colm G Connolly, April C May, Susan F Tapert, Marc Wittmann, Martin P Paulus

Abstract read
In one paragraph

Article in Addiction (Abingdon, England), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

41 citing papers in PubMed, 1 synthesis or guideline pooled it, 67 citations in OpenAlex.

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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

6 authors at 3 institutions in 2 countries.

Jennifer L StewartDepartment of Psychiatry, University of California San Diego, La Jolla, CA, USA.
Colm G Connolly
April C May
Susan F Tapert
Marc Wittmann
Martin P Paulus
University of California, San Diego · USVA San Diego Healthcare System · USUniversity of California, San Francisco · US

Funding

STIMULANT DEPENDENCE: NEURAL MECHANISMS OF RELAPSER01DA018307 · NIDA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI PAULUS, MARTIN P. · 2004 to 2008
$1.3M
NIDA NIH HHS R01 DA018307
6 · The paper itself

Abstract

BACKGROUND AND

aimsIndividuals with methamphetamine dependence (MD) exhibit dysfunction in brain regions involved in goal maintenance and reward processing when compared with healthy individuals. We examined whether these characteristics also reflect relapse vulnerability within a sample of MD patients.

designLongitudinal, with functional magnetic resonance imaging (fMRI) and clinical interview data collected at baseline and relapse status collected at 1-year follow-up interview.

settingKeck Imaging Center, University of California San Diego, USA.

participantsMD patients (n = 60) enrolled into an in-patient drug treatment program at baseline. MD participants remaining abstinent at 1-year follow-up (abstinent MD group; n = 42) were compared with MD participants who relapsed within this period (relapsed MD group; n = 18). MEASUREMENTS: Behavioral and neural responses to a reinforcement learning (paper-scissors-rock) paradigm recorded during an fMRI session at time of treatment.

findingsThe relapsed MD group exhibited greater bilateral inferior frontal gyrus (IFG) and right striatal activation than the abstinent MD group during the learning of reward contingencies (Cohen's d range: 0.60-0.83). In contrast, the relapsed MD group displayed lower bilateral striatum, bilateral insula, left IFG and left anterior cingulate activation than the abstinent MD group (Cohen's d range: 0.90-1.23) in response to winning, tying and losing feedback.

conclusionsMethamphetamine-dependent individuals who achieve abstinence and then relapse show greater inferior frontal gyrus activation during learning, and relatively attenuated striatal, insular and frontal activation in response to feedback, compared with methamphetamine-dependent people who remain abstinent.

Indexed as

MethamphetamineReinforcement, PsychologyRewardAdultAmphetamine-Related DisordersCase-Control StudiesCerebral CortexDecision MakingFemaleFrontal LobeFunctional NeuroimagingGyrus CinguliHumansLearningLongitudinal StudiesMagnetic Resonance ImagingMethamphetamineDecision-makingfMRIlearningmethamphetaminerelapsereward

Identifiers

PMID24329936
PMCPMC3945155
OpenAlexW2167904220

What OpenQuestion holds

Textmetadata
LicenceTDM
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.