Evidence map›Paper›PMID 29552509›Full record

ArticleSchizophrenia research. Cognition2018

Effects of transcranial direct current stimulation on working memory and negative symptoms in schizophrenia: a phase II randomized sham-controlled trial.

J S Gomes, A P Trevizol, D V Ducos, A Gadelha, B B Ortiz, A O Fonseca, H T Akiba, C C Azevedo, L S P Guimaraes, P Shiozawa and 3 more

Abstract read
In one paragraph

Article in Schizophrenia research. Cognition, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 5 pooled it
–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

18 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
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  12. Personalized Brain-Computer Interface and Its Applications.Journal of personalized medicine · 2022
    Review
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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

13 authors.

J S GomesInterdisciplinary Laboratory of Clinical Neurosciences, Federal University of Sao Paulo, Sao Paulo, Brazil.
A P TrevizolCenter for Neuromodulation Studies, Dep. of Psychiatry, Federal University of Sao Paulo, Sao Paulo, Brazil.
D V DucosInterdisciplinary Laboratory of Clinical Neurosciences, Federal University of Sao Paulo, Sao Paulo, Brazil.
A GadelhaInterdisciplinary Laboratory of Clinical Neurosciences, Federal University of Sao Paulo, Sao Paulo, Brazil.
B B OrtizInterdisciplinary Laboratory of Clinical Neurosciences, Federal University of Sao Paulo, Sao Paulo, Brazil.
A O FonsecaInterdisciplinary Laboratory of Clinical Neurosciences, Federal University of Sao Paulo, Sao Paulo, Brazil.
H T AkibaInterdisciplinary Laboratory of Clinical Neurosciences, Federal University of Sao Paulo, Sao Paulo, Brazil.
C C AzevedoInterdisciplinary Laboratory of Clinical Neurosciences, Federal University of Sao Paulo, Sao Paulo, Brazil.
L S P GuimaraesEpidemiology and Biostatistics Unity, Clinical Hospital of Porto Alegre, Federal University of Rio Grande do Sul, Rio Grande do Sul, Brazil.
P ShiozawaDepartment of Psychiatry, Santa Casa School of Medicine, Sao Paulo, Brazil.
Q CordeiroInterdisciplinary Laboratory of Clinical Neurosciences, Federal University of Sao Paulo, Sao Paulo, Brazil.
A LacerdaInterdisciplinary Laboratory of Clinical Neurosciences, Federal University of Sao Paulo, Sao Paulo, Brazil.
A M DiasInterdisciplinary Laboratory of Clinical Neurosciences, Federal University of Sao Paulo, Sao Paulo, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe lack of efficacy of pharmacological treatments for cognitive and negative symptoms in schizophrenia highlights the need for new interventions. We investigated the effects of tDCS on working memory and negative symptoms in patients with schizophrenia.

methodDouble-blinded, randomized, sham-controlled clinical trial, investigating the effects of 10 sessions of tDCS in schizophrenia subjects. Stimulation used 2 mA, for 20 min, with electrodes of 25 cm

resultsWe did not find group ∗ time interaction for the working memory (

conclusionThe results from this trial highlight the therapeutic effects of tDCS for treatment of persistent symptoms in schizophrenia, with reduction of negative symptoms. We were not able to confirm the superiority of active tDCS over sham to improve working memory performance. Larger sample size studies are needed to confirm these findings.

Indexed as

Negative symptomsSchizophreniatDCSTranscranial direct current stimulationWorking memory

Identifiers

PMID29552509
PMCPMC5852322

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.