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United States Patent | 3,951,134 |
Malech | April 20, 1976 |
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.
Inventors: | Malech; Robert G. (Plainview, NY) |
Assignee: | Dorne & Margolin Inc. (Bohemia, NY) |
Appl. No.: | 494518 |
Filed: | August 5, 1974 |
U.S. Class: | 128/2.1B |
Intern'l Class: | A61B 005/04 |
Field of Search: | 128/1 C,1 R,2.1 B,2.1 R,419 R,422 R,420,404,2 R,2 S,2.05 R,2.05 V,2.05 F,2.06 R 340/248 A,258 A,258 B,258 D,229 |
2860627 | Nov., 1958 | Harden et al. | 128/2. |
3096768 | Jul., 1963 | Griffith, Jr. | 128/420. |
3233450 | Feb., 1966 | Fry | 128/2. |
3483860 | Dec., 1969 | Namerow | 128/2. |
3495596 | Feb., 1970 | Condict | 128/1. |
3555529 | Jan., 1971 | Brown et al. | 128/2. |
3773049 | Nov., 1973 | Rabichev et al. | 128/1. |
3796208 | Mar., 1974 | Bloice | 128/2. |