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Does non-invasive brain stimulation reduce essential tremor? A systematic review and meta-analysis
Nyeonju Kang1,2,3, James H Cauraugh2
1Laboratory for Rehabilitation Neuroscience, Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida, United States of America.
Non-invasive brain stimulation (NIBS) effectively reduces essential tremor (ET) symptoms. This therapy modulates brain oscillations and shows positive effects across various patient subgroups and stimulation methods.
Area of Science:
- Neuroscience
- Neurology
- Medical Engineering
Background:
- Essential tremor (ET) is a common age-related neurological disorder causing involuntary shaking.
- Current treatments for ET have limitations, necessitating exploration of novel therapeutic approaches.
Purpose of the Study:
- To systematically review and meta-analyze the efficacy of Non-invasive Brain Stimulation (NIBS) for treating essential tremor.
- To evaluate the impact of NIBS on tremor symptoms in ET patients.
Main Methods:
- A comprehensive literature search identified eight studies utilizing 1 Hz rTMS, cTBS, or ctDCS protocols.
- Twenty comparisons from these studies were statistically synthesized in a meta-analysis.
Main Results:
- NIBS techniques significantly reduced tremulous behaviors in individuals with ET.
- Positive therapeutic effects were observed across subgroups based on tremor assessment, stimulation site, session number, and sustained effects.
Conclusions:
- This systematic review and meta-analysis provides robust evidence supporting the positive treatment effects of NIBS for essential tremor motor therapy.
- NIBS represents a promising non-invasive therapeutic option for managing essential tremor.
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