While looking for a NIR light therapy device to help my shoulder recover from surgery, I found these systems that use the wave lengths suggested in studies for treating brain injuries.

I googled "light therapy brain" and found many articles.

The research is here.

This study used LLLT frequencies similar to the reVive Pain Therapy system
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3065857/

This study used LLLT frequencies similar to the reVive Anti-Aging Facial system.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3104287/


Here are some places that sell these systems.

http://revivelighttherapy.com/
http://revivelighttherapy.com/pages/science
http://revivelighttherapy.com/collections/all-products

http://www.kohls.com/search.jsp?sear...web-ta-keyword

Here are more articles.

http://www.biocaresystems.com/fileup...ed%20Light.pdf
http://www.prnewswire.com/news-relea...300131804.html