Patent Document ID: 4031883
Application ID: 05707480
Patent Flag: 1

Claim One:
1. An apparatus for measuring the electroencephalographic activity of at least two lobes of the brain of a human trainee and providing the trainee with a sensory signal in response to a combination of amplitude and the in-phase activity of each of the brain lobes comprising: a plurality of electrical contacts coupled to the head of the trainee, said contacts being disposed adjacent to at least two lobes or areas of the brain, and to a neutral area of the trainee's head for obtaining at least two signals from said contacts which correspond to each of said at least two lobes or areas of the brain; at least one amplifier for amplifying said at least two signals; filter means coupled to said at least one amplifier for filtering the signals to obtain output signals each within a defined frequency range; a summing amplifier coupled to said filter means for summing the in-phase signals of the defined frequency band of the amplified brain wave activity to produce a phase relevant measure of the trainee's brain wave activity; audio signal means coupled to said summing amplifier for producing an auditory signal and modulating the volume of the auditory signal responsive to the amplitude and phase of the summed brain wave activity, so as to present to the trainee an audible signal which reflects the degree of phase parity and amplitude of the signals recorded from said at least two lobes or areas of the brain.