Brain stimulation with dual-task training showed benefits that depended on the outcome
A review across neurological conditions found no clear overall gain in global cognition, alongside selected gains in executive function and movement tasks that varied by diagnosis.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Combining direct-current brain stimulation with dual-task training did not produce a statistically clear overall improvement in global cognition. Some executive-function and movement outcomes improved, but the patterns differed across diagnoses. The executive-function benefit came from the mild cognitive impairment subgroup, so the pooled findings should not be applied uniformly to people with different neurological conditions.
The abstract does not describe the comparator conditions or intervention durations. Results varied across diagnoses and outcomes, limiting conclusions about broad cognitive benefits or how much stimulation adds to dual-task training alone.
Cognition was not a single result
The review distinguished a broad cognitive screening score from an executive-function test. A benefit on the latter does not establish an improvement in cognition overall, especially when that benefit was confined to a diagnostic subgroup.
Movement findings also varied
Some dual-task walking measures improved in participants with mild cognitive impairment or stroke. Individual Parkinson’s studies reported gains on selected measures, but the review described more limited overall efficacy in that condition, rather than a consistent benefit across tasks.
The original publication
Effectiveness of transcranial electrical stimulation combined with dual-task training in stroke, mild cognitive impairment and Parkinson's disease: a systematic review and meta-analysis of randomized controlled trials.
Fu Y, Wang W, Yan Q et al.
Front Hum Neurosci · 2025
- PubMed ID
- 41625543
- Record checked
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