This is the website of one of the most prominent members of the LENS community, Dr. Stephen Larsen. It is an excellent resource for information, research articles and books on the subjects of LENS and neurofeedback
The website of the founder of this system; it provides information on research and a listing of LENS providers www.bulletproofexec.com An amazing website filled with numerous ideas on how to increase performance through a variety of methods ranging from brain supplements to dietary changes (including the famous Bulletproof Coffee recipe)
This is a link to a website that creates at-home brain training software and has a ton of useful information ranging from brain fitness exercises to recipes that can help to improve brain functioning
Patrick Holford has written a wonderful book Optimum Nutrition for the Mind in which he covers food and supplementation to help with a variety of cognitive issues
Clinical Research and Information (Please click on the link to go to the article)