http://www.aclearn.net/content_files/acl/pages/news/publications/3t/unlocking-the-potential-of-information-learning-technology-ilt-pdf-403kb.pdf

http://cogsci.ucsd.edu/~coulson/jpr.htm

http://www.incrediblehorizons.com/EEG-Biofeedback.html

http://incrediblehorizons.com/index.html