Abstract: A non-motive system for enabling a person to carry out a function includes circuitry designed to detect evoked-response potentials as a result of stimuli presented to the person. Each element of the stimulus corresponds to an external factor or function, so that the person attending to a particular element may communicate his desire that the external factor or function corresponding to that element be carried out merely through the detection of his brain wave response to the stimulus. The brain wave response is detected by electrodes, conditioned, and correlated with a precalibrated set of response template signals to derive the element attended by the subject, and thereby cause the indicated factor or function to be carried out.

Abstract: A method and apparatus for applying a musical feedback signal to the human brain, or any other brain, to induce controllable psychological and physiological responses. A signal representing the ongoing electroencephalographic (EEG) signal of a brain preferably is obtained from the electrode location on the scalp known as CZ or P3 in clinical notation. A signal processor converts the ongoing EEG into electrical signals which are converted into music by synthesizers. The music is acoustically fed back to the brain after a time delay calculated to shift the phase of the feedback in order to reinforce specific or desired ongoing EEG activity from the scalp position of interest. The music is comprised of at least one voice that follows the moment-by-moment contour of the EEG in real time to reinforce the desired EEG activity. The music drives the brain into resonance with the music to provide a closed loop or physiological feedback effect.