Neurofeedback is a high tech variant of the classical biofeedback. Neurofeedback is less tested and more controversial than  biofeedback. Also known as brain-wave training or EEG biofeedback, the technique may be useful as a safe, drug-free alternative for the treatment of migraines.

People undergoing neurofeedback appear to be playing an ordinary computer game-except you won't see them using their hands. Instead, the user is rewarded for producing desirable brain-wave patterns. Painless electronic sensors are placed on the earlobes and scalp. As the mind relaxes and focuses, the computer responds by sending Pac-Manlike characters racing across the screen or a bar graph shooting upward. When the mind drifts, nothing happens.