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Published in: BMC Neurology 1/2020

Open Access 01-12-2020 | Repetitive Transcranial Magnetic Stimulation | Research article

Effect of rTMS on Parkinson’s cognitive function: a systematic review and meta-analysis

Authors: Yi Jiang, Zhiwei Guo, Morgan A. McClure, Lin He, Qiwen Mu

Published in: BMC Neurology | Issue 1/2020

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Abstract

Background

To evaluate the effects and optimal parameters of repetitive transcranial magnetic stimulation (rTMS) on cognition function of patients with Parkinson’s disease (PD) and to estimate which cognitive function may obtain more benefits from rTMS.

Method

The articles dealing with rTMS on cognitive function of PD patients were retrieved from the databases until April 2019. Outcomes of global cognitive function and different cognitive domains were extracted. The standardized mean differences (SMDs) with 95% confidence interval (CI) of cognitive outcome for different parameters, scales, and cognitive functions were estimated.

Results

Fourteen studies involving 173 subjects were included in this meta-analysis. A significant effect size was observed with the mini-mental state examination (MMSE) for the global cognitive outcome based on the evidence of four published articles. Further subtests for different cognitive domains demonstrated prominent effect for the executive function. The significant effect sizes for executive function were found with multiple sessions of high-frequency rTMS over frontal cortex; especially over dorsolateral prefrontal cortex (DLPFC). All of the other cognitive domains, which included memory, attention, and language ability, did not obtain significant effects.

Conclusions

Multiple sessions of high-frequency rTMS over the DLPFC may have positive effect on executive function in PD patients. Further well designed studies with large sample sizes are needed to verify our results and ascertain the long-term effects of rTMS.
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Metadata
Title
Effect of rTMS on Parkinson’s cognitive function: a systematic review and meta-analysis
Authors
Yi Jiang
Zhiwei Guo
Morgan A. McClure
Lin He
Qiwen Mu
Publication date
01-12-2020
Publisher
BioMed Central
Published in
BMC Neurology / Issue 1/2020
Electronic ISSN: 1471-2377
DOI
https://doi.org/10.1186/s12883-020-01953-4

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