Check out the blog posts about a fascinating article called How and why does photobiomodulation change brain activity?

This is a particularly good read.

It is short - not even two pages, but it is a fantastic summary of recent findings. As well, it poses some intriguing questions.

Reference:

Mitrofanis J, Henderson LA. How and why does photobiomodulation change brain activity?. Neural Regen Res. 2020;15(12):2243-2244. doi:10.4103/1673-5374.284989