Evidence map›Paper›PMID 36175919›Full record

ArticleTrials2022

The effect of transcranial direct current stimulation combined with working memory training on working memory deficits in schizophrenic patients: study protocol for a randomized controlled trial.

Xiaolin Zhu, Chao Huang, Hongzhen Fan, Fengmei Fan, Yanli Zhao, Meihong Xiu, Yunhui Wang, Yajun Li, Yunlong Tan, Zhiren Wang and 1 more

Open access · goldAbstract readClinical Trial Protocol
In one paragraph

Article in Trials, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.5field-weighted citation impact, top 36% 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

3 citing papers in PubMed, 7 citations in OpenAlex.

  1. Article
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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

11 authors at 2 institutions in 1 country.

Xiaolin ZhuBeijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, 100096, People's Republic of China.ORCID http://orcid.org/0000-0002-8848-9511
Chao HuangPinghu Branch, Chongqing Three Gorges Central Hospital, Chongqing, 404000, People's Republic of China.
Hongzhen FanBeijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, 100096, People's Republic of China.
Fengmei FanBeijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, 100096, People's Republic of China.
Yanli ZhaoBeijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, 100096, People's Republic of China.
Meihong XiuBeijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, 100096, People's Republic of China.
Yunhui WangBeijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, 100096, People's Republic of China.
Yajun LiBeijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, 100096, People's Republic of China.
Yunlong TanBeijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, 100096, People's Republic of China.
Zhiren WangBeijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, 100096, People's Republic of China.
Shuping TanBeijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, 100096, People's Republic of China. shupingtan@126.com.
Peking University · CNChongqing Three Gorges Central Hospital · CN

Funding

Beijing Hospitals Authority Youth Program QML20202001National Natural Science Foundation of China 81801328
6 · The paper itself

Abstract

backgroundWorking memory deficits are one of the core and most characteristic clinical features of cognitive impairment in schizophrenia. Cognitive training can improve the cognitive function of patients with schizophrenia. However, the overall and transfer effects of working memory treatment (WMT) require improvement. Numerous studies have confirmed that transcranial direct current stimulation (tDCS) enhances neuroplasticity in the brain, providing a new treatment approach for cognitive impairment in patients with schizophrenia. We hypothesize that a training mode combining "preheating" (tDCS, which changes the neural activity of working memory-related brain regions) and "ironing" (WMT) affords greater cognitive improvements than WMT alone. In addition, this study aims to examine the mechanisms underlying the superiority of tDCS combined with WMT in improving cognitive function in patients with schizophrenia.

methodsThis study will include 120 patients with schizophrenia aged 18-60 years. The patients will be randomized into four groups: the study group (tDCS + WMT), tDCS group (tDCS + simple response training, SRT), WMT group (sham tDCS + WMT), and control group (sham tDCS + SRT). Patients will receive 20-min, 2 mA sessions of active or sham tDCS twice a day on weekdays for 2 weeks. Each stimulation will be immediately followed by a 1 - 2-min rest and 40 min of WMT or SRT. The primary outcome is cognitive function, measured using Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) and some subscales of the MATRICS Consensus Cognitive Battery (MCCB). The secondary outcomes are other behavioral measures, variations in brain imaging, and serum levels of brain-derived neurotrophic factor (BDNF). All outcomes will be measured at baseline, post-treatment, and 3-month follow-up, except for brain imaging and BDNF levels, which will be measured at baseline and post-treatment only. DISCUSSION: If tDCS combined with WMT results in significant improvements and prolonged effects on working memory, this method could be considered as a first-line clinical treatment for schizophrenia. Moreover, these results could provide evidence-based support for the development of other approaches to improve cognitive function in patients with schizophrenia, especially by enhancing WMT effects.

trial registrationChictr.org.cn; ChiCTR2200063844. Registered on September 19, 2022.

Indexed as

SchizophreniaTranscranial Direct Current StimulationBrain-Derived Neurotrophic FactorDouble-Blind MethodEquivalence Trials as TopicHumansLearningMemory DisordersMemory, Short-TermRandomized Controlled Trials as TopicBrain-Derived Neurotrophic FactorCognitive deficitsRandomized controlled trialSchizophreniaTranscranial direct current stimulationWorking memory training

Identifiers

PMID36175919
PMCPMC9523935
OpenAlexW4297963200

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.