Effects of transcranial direct current stimulation on motor learning in healthy elderly individuals: a systematic review and meta-analysis.

Fusheng Zhang, Yanbai Han, Hongli Wang, Yong Li, Dingyu Tang
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Abstract

Background: Transcranial direct current stimulation (tDCS) is widely used in motor recovery. Nevertheless, whether tDCS improves motor learning in healthy older adults is still controversial. This review aims to investigate the effectiveness of tDCS on motor learning in healthy elderly individuals.

Methods: The PubMed, Cochrane Library, Web of Science and Embase databases were initially searched from inception to December 5, 2022. The standard mean difference (SMD) with the corresponding 95% confidence intervals (CIs) were analysed via random-effect models.

Results: Compared with the sham group, no significant effects were found regarding improvement in motor learning based on the speed or accuracy of the task and reaction time for the tDCS intervention group. After subgroup analysis, a significant effect was found for improved motor learning based on reaction time in the primary motor cortex (M1)-cerebellar group.

Conclusions: This review revealed that tDCS had no significant effect on improving the speed or accuracy of motor learning in healthy elderly adults. However, it has a significant effect on improving the motor learning ability based on the reaction time of the task (mainly referring to the tDCS stimulation position of M1 and cerebellar), although the results have obvious heterogeneity and uncertainty.

经颅直流电刺激对健康老年人运动学习的影响:系统回顾和荟萃分析。
背景:经颅直流电刺激(tDCS)被广泛用于运动康复。然而,经颅直流电刺激是否能改善健康老年人的运动学习仍然存在争议。本综述旨在研究经颅直流电刺激对健康老年人运动学习的有效性:方法:初步检索了 PubMed、Cochrane Library、Web of Science 和 Embase 数据库,检索时间从开始到 2022 年 12 月 5 日。通过随机效应模型分析了标准平均差(SMD)及相应的95%置信区间(CI):与假组相比较,tDCS干预组在根据任务的速度或准确性以及反应时间改善运动学习方面没有发现显著效果。经过亚组分析,发现初级运动皮层(M1)-小脑组对基于反应时间的运动学习改善有显著效果:本综述显示,tDCS 对提高健康老年人的运动学习速度或准确性没有明显效果。结论:本综述显示,tDCS 对提高健康老年人的运动学习速度和准确性无显著作用,但对提高基于任务反应时间的运动学习能力有显著作用(主要指 M1 和小脑的 tDCS 刺激位置),尽管结果具有明显的异质性和不确定性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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