Dual-target brain stimulation showed a working-memory signal in a small trial
Dual-target stimulation improved task performance and produced a higher responder proportion than sham, but effect sizes and the direct comparison with single-target stimulation remain unclear in the abstract.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Dual-target electrical brain stimulation showed improved working-memory task performance, particularly on harder tasks, and a higher responder proportion than sham. Single-target effects were described as limited. The abstract lacks direct estimates comparing the active treatments, so superiority over single-target stimulation and persistence of any benefit remain uncertain.
This abstract-based summary lacks effect sizes, confidence intervals, stimulation duration, a responder definition and longer-term follow-up. The small healthy sample limits conclusions about people with memory disorders.
What researchers found
Proportion responding on working-memory tasks
Dual-target stimulation versus sham in testing before and after stimulation; elapsed time and the definition of a responder were not reported.
A laboratory memory task
Participants completed n-back memory tasks before and after stimulation while researchers recorded brain responses with near-infrared spectroscopy. The study assessed laboratory task performance alongside brain measurements; the abstract does not describe memory outcomes in daily life.
How to read the association
Improvements in task accuracy were associated with strengthening of connectivity within brain networks. That link concerns changes in both measures; it does not establish that stronger connectivity caused the observed improvement in working-memory performance.
The original publication
Effects of single/dual-target transcranial alternating current stimulation on working memory in healthy individuals.
Zhou S, Zhang B, Gao Y et al.
Neuroscience · 2026
- PubMed ID
- 41692292
- Record checked
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