Brain stimulation review reports mixed results across Parkinson's symptom measures
A meta-analysis reported benefits across several symptoms beyond movement, but disagreement between assessment scales makes the overall picture harder to interpret.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
The review reported improvements in thinking, mood, several sleep measures and daily functioning among people with Parkinson's disease receiving transcranial direct current stimulation. However, findings varied across assessment scales. Without effect sizes or details of the comparison treatments, the abstract cannot show how meaningful or lasting the reported improvements were.
Only the abstract was available. It does not identify individual study designs, control conditions, stimulation schedules or follow-up lengths, preventing a detailed assessment of bias, treatment differences or durability.
Several sleep outcomes
The reported sleep findings included longer sleep, better sleep efficiency, fewer arousals and less daytime sleepiness. These are distinct outcomes, and the abstract does not provide the amount of change for any of them.
Measures did not always agree
Results differed across measures of cognition, recall, sleep and Parkinson's-related quality of life. The authors also describe good tolerance of stimulation, but give no adverse-event counts and call for larger trials to confirm their findings.
The original publication
Effects of transcranial direct current stimulation on non-motor functions in individuals with Parkinson's disease: a systematic review and meta-analysis.
Li Q, Ye H, Ye C et al.
Front Neurosci · 2025
- PubMed ID
- 41479807
- Record checked
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