Summary: Noninvasive delivery of alternating electrical currents to temporal and prefrontal brain regions improves working memory and reverses age-related changes in brain dynamics in the elderly, report Reinhart and Nguyen in Nature Neuroscience (22):820–827(2019). They also report a similar effect in young adults with poor working memory performance. This method is a promising first step for successfully treating working memory deficits in the elderly.

Quentin R and Cohen LG: Reversing working memory decline in the elderly. Nature Neuroscience 22(5); 686-688 (2019).

https://www.ncbi.nlm.nih.gov/pubmed/30962629

and

https://www.ncbi.nlm.nih.gov/pubmed/30962628