Neurophone http://www.neurophone.com/
Ultrasonic neuropathic stimulation for instrument for brain entrainment, aiding in learning, relaxation, and meditation.
Scenar http://www.scenar.info/
Self-Controlled Energo Neuro Adaptive Regulation machine, stimulating the nervous system to heal itself. Includes product history and how it works.
Brainwave Stimulators