Gotu Kola
This is a very important herb used for memory boosting in India. It can help brain cells to revive. There is so much information in ayurveda and siddha about the herbs.
here are some links.
Gotu kola extracts possess antioxidant activity and can alter mitochondrial function [92, 93].
https://www.youtube.com/watch?v=33HIfLJKTqA