The cognitive effect of non-invasive brain stimulation combined with cognitive training in Alzheimer’s disease and mild cognitive impairment: a systematic review and meta-analysis

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Title: The cognitive effect of non-invasive brain stimulation combined with cognitive training in Alzheimer’s disease and mild cognitive impairment: a systematic review and meta-analysis
Authors: Ting Yang, Wentao Liu, Jiali He, Chenfan Gui, Lijiao Meng, Li Xu, Chengsen Jia
Source: Alzheimer’s Research & Therapy, Vol 16, Iss 1, Pp 1-19 (2024)
Publisher Information: BMC, 2024.
Publication Year: 2024
Collection: LCC:Neurosciences. Biological psychiatry. Neuropsychiatry
LCC:Neurology. Diseases of the nervous system
Subject Terms: Non-invasive brain stimulation, Cognitive training, Alzheimer’s disease, Mild cognitive impairment, Repetitive transcranial magnetic stimulation, Transcranial direct current stimulation, Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571, Neurology. Diseases of the nervous system, RC346-429
More Details: Abstract Background Non-invasive brain stimulation (NIBS) combined with cognitive training (CT) may have shown some prospects on improving cognitive function in patients with Alzheimer’s disease (AD) and mild cognitive impairment (MCI). However, data from clinical trials or meta-analysis involving NIBS combined with CT have shown controversial results. The aim of this systematic review and meta-analysis was to evaluate short-term and long-term effects of NIBS combined with CT on improving global cognition and other specific cognitive domains in patients with AD and MCI. Methods This systematic review and meta-analysis was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Five electronic databases including PubMed, Web of Science, EBSCO, Cochrane Library and Embase were searched up from inception to 20 November 2023. The PEDro scale and the Cochrane’s risk of bias assessment were used to evaluate risk of bias and methodological quality of included studies. All statistical analyses were conducted with Review Manager 5.3. Results We included 15 studies with 685 patients. The PEDro scale was used to assess methodological quality with a mean score of 7.9. The results of meta-analysis showed that NIBS combined with CT was effective on improving global cognition in AD and MCI (SMD = 0.52, 95% CI (0.18, 0.87), p = 0.003), especially for patients accepting repetitive transcranial magnetic stimulation (rTMS) combined with CT (SMD = 0.46, 95% CI (0.14, 0.78), p = 0.005). AD could achieve global cognition improvement from NIBS combined with CT group (SMD = 0.77, 95% CI (0.19, 1.35), p = 0.01). Transcranial direct current stimulation (tDCS) combined with CT could improve language function in AD and MCI (SMD = 0.29, 95% CI (0.03, 0.55), p = 0.03). At evaluation follow-up, rTMS combined with CT exhibited larger therapeutic responses to AD and MCI in global cognition (SMD = 0.55, 95% CI (0.09, 1.02), p = 0.02). AD could achieve global cognition (SMD = 0.40, 95% CI (0.03, 0.77), p = 0.03) and attention/working memory (SMD = 0.72, 95% CI (0.23, 1.20), p = 0.004) improvement after evaluation follow-up from NIBS combined with CT group. Conclusions Overall, NIBS combined with CT, particularly rTMS combined with CT, has both short-term and follow-up effects on improving global cognition, mainly in patients with AD. tDCS combined with CT has advantages on improving language function in AD and MCI. Future more studies need evaluate cognitive effects of NIBS combined with CT on other specific cognitive domain in patients with cognitive deterioration.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 1758-9193
Relation: https://doaj.org/toc/1758-9193
DOI: 10.1186/s13195-024-01505-9
Access URL: https://doaj.org/article/7b426dae54d34060aa61a3baa63a8cc6
Accession Number: edsdoj.7b426dae54d34060aa61a3baa63a8cc6
Database: Directory of Open Access Journals
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More Details
ISSN:17589193
DOI:10.1186/s13195-024-01505-9
Published in:Alzheimer’s Research & Therapy
Language:English