25 minutes of non-invasive electrical brain stimulation was able to improve working memory by restoring electrical activity between two brain regions
25 minutes of non-invasive electrical brain stimulation was able to improve working memory by restoring electrical activity between two brain regions (prefrontal and temporal) in elderly people.
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The memory improvements lasted an hour after the treatment and matched the performance of younger participants.
This was a small study with only 42 people and the effects only lasted an hour but it is an interesting proof-of-principle that electrical activity between two brain regions can be restored to a more youthful state and this improves working memory. Much more work is needed but this is an exciting preliminary finding.