Evidence map›Paper›PMID 26499250›Full record

Trial reportTrials2015

Would transcranial direct current stimulation (tDCS) enhance the effects of working memory training in older adults with mild neurocognitive disorder due to Alzheimer's disease: study protocol for a randomized controlled trial.

Calvin P W Cheng, Sandra S M Chan, Arthur D P Mak, Wai Chi Chan, Sheung Tak Cheng, Lin Shi, Defeng Wang, Linda Chiu-Wa Lam

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Trials, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 3 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

15 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  3. Cognitive training for people with mild to moderate dementia.The Cochrane database of systematic reviews · 2019
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  8. Swallowing Rehabilitation: Tracing the Evolution of Assessment and Intervention Approaches for Dysphagia over 30 Years.Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2024
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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.

Calvin P W ChengDepartment of Psychiatry, Tai Po Hospital, 9 Chuen On Road, Tai Po, Hong Kong. cpw182@ha.org.hk.
Sandra S M ChanDepartment of Psychiatry, The Chinese University of Hong Kong, Rm G25, G/F, Multi-center, Tai Po Hospital, 9 Chuen On Road, Tai Po, Hong Kong. schan@cuhk.edu.hk.
Arthur D P MakDepartment of Psychiatry, The Chinese University of Hong Kong, Rm G25, G/F, Multi-center, Tai Po Hospital, 9 Chuen On Road, Tai Po, Hong Kong. arthurdpmak@cuhk.edu.hk.
Wai Chi ChanDepartment of Psychiatry, The University of Hong Kong, 3/F, HKJC for Interdisciplinary Research, 5 Sassoon Road, Pokfulam, Hong Kong. waicchan@hku.hk.
Sheung Tak ChengDepartment of Health and Physical Education, Hong Kong Institute of Education, Rm D4-2/F-03, Block D4, 10 Lo Ping Road, Tai Po, NT, Hong Kong. takcheng@ied.edu.hk.
Lin ShiDepartment of Medicine and Therapeutics, The Chinese University of Hong Kong, 9/F, Lui Che Woo Sciences Building, Prince of Wales Hospital, Shatin, Hong Kong. shilin@cuhk.edu.hk.
Defeng WangDepartment of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong. dfwang@cuhk.edu.hk.
Linda Chiu-Wa LamDepartment of Psychiatry, The Chinese University of Hong Kong, Rm G25, G/F, Multi-center, Tai Po Hospital, 9 Chuen On Road, Tai Po, Hong Kong. cwlam@cuhk.edu.hk.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere has been longstanding interesting in cognitive training for older adults with cognitive impairment. In this study, we will investigate the effects of working memory training, and explore augmentation strategies that could possibly consolidate the effects in older adults with mild neurocognitive disorder. Transcranial direct current stimulation (tDCS) has been demonstrated to affect the neuronal excitability and reported to enhance memory performance. As tDCS may also modulate cognitive function through changes in neuroplastic response, it would be adopted as an augmentation strategy for working memory training in the present study. METHODS/

designThis is a 4-week intervention double-blind randomized controlled trial (RCT) of tDCS. Chinese older adults (aged 60 to 90 years) with mild neurocognitive disorder due to Alzheimer's disease (DSM-5 criteria) would be randomized into a 4-week intervention of either tDCS-working memory (DCS-WM), tDCS-control cognitive training (DCS-CC), and sham tDCS-working memory (WM-CD) groups. The primary outcome would be working memory test - the n-back task performance and the Chinese version of the Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-Cog). Secondary outcomes would be test performance of specific cognitive domains and mood. Intention-to-treat analysis would be carried out. Changes of efficacy indicators with time and intervention would be tested with mixed effect models. DISCUSSION: This study adopts the theory of neuroplasticity to evaluate the potential cognitive benefits of non-invasive electrical brain stimulation, working memory training and dual stimulation in older adults at risk of cognitive decline. It would also examine the tolerability, program adherence and adverse effects of this novel intervention. Information would be helpful for further research of dementia prevention studies.

trial registrationChiCTR-TRC- 14005036 Date of registration: 31 July 2014.

Indexed as

CognitionCognitive Behavioral TherapyMemory, Short-TermTranscranial Direct Current StimulationAgedAged, 80 and overAlzheimer DiseaseBrainClinical ProtocolsCombined Modality TherapyDouble-Blind MethodFemaleHong KongHumansIntention to Treat AnalysisMale

Identifiers

PMID26499250
PMCPMC4619532

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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.