Abstract
Non-invasive brain stimulation (NIBS) has attracted significant attention as it has been proven to be effective in facilitating upper limb motor recovery in patients with stroke. This meta-analysis evaluates the efficacy of dual-site non-invasive brain stimulation (DS-NIBS) in improving upper extremity motor function after stroke. A PRISMA systematic search was conducted for randomized controlled trials. Two authors independently extracted data, and the quality of included studies was assessed. Ten studies were included in the current review. DS-NIBS demonstrated a significant effect on upper extremity motor function impairment. However, only two studies showed no clear effects of DS-tDCS on upper extremity motor function after stroke. Due to the limited number of studies, the effects of DS-NIBS remain inconclusive. This review found evidence for the relatively higher efficacy of DS-NIBS on post-stroke upper extremity motor function impairment, compared to the sham and SS-NIBS. Additionally, DS-TMS was found to generate better improvement than DS-tDCS.
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