Abstract: A method for treating an individual by use of electroencephalographic feedback includes selecting a reference site for determining a brain wave frequency of the individual, entraining the brain wave frequency of the individual in one direction until a first predetermined stop condition occurs, and then entraining the brain wave frequency of the individual in the opposite direction until a second predetermined stop condition occurs.

Abstract: A method for changing brain wave frequency to a desired frequency determines a current brain wave frequency of a user, generates two frequencies with a frequency difference of a magnitude between that of the current actual brain wave frequency and the desired frequency but always within a predetermined range of the current actual brain wave frequency, and produces an output to the user corresponding to the two frequencies. One apparatus to accomplish the method has a computer processor, a computer memory, EEG electrodes along with an amplifier, a programmable timing generator responsive to the computer processor for generating the two frequencies, audio amplifiers and a beat frequency generator driving a visual frequency amplifier.