Apparatus and method for remotely monitoring and altering brain waves
Inventor: Robert G. Malech
Patent number: 3951134
Filing date: Aug 5, 1974
Issue date: Apr 20, 1976
Abstract: Apparatus for and method of sensing brain waves at a position remote from a subject whereby electromagnetic signals of different frequencies are simultaneously transmitted to the brain of the subject in which the signals interfere with one another to yield a waveform which is modulated by the subject's brain waves. The interference waveform which is representative of the brain wave activity is re-transmitted by the brain to a receiver where it is demodulated and amplified. The demodulated waveform is then displayed for visual viewing and routed to a computer for further processing and analysis. The demodulated waveform also can be used to produce a compensating signal which is transmitted back to the brain to effect a desired change in electrical activity therein.
1. Brain wave monitoring apparatus comprising
means for producing a base frequency signal,means for producing a first signal having a frequency related to that of the base frequency and at a predetermined phase related thereto,means for transmitting both said base frequency and said first signals to the brain of the subject being monitored,means for receiving a second signal transmitted by the brain of the subject being monitored in response to both said base frequency and said first signals,mixing means for producing from said base frequency signal and said received second signal a response signal having a frequency related to that of the base frequency, andmeans for interpreting said response signal..以下略