Surgery – Truss – Perineal
Patent
1976-02-04
1977-02-22
Kamm, William E.
Surgery
Truss
Perineal
35 8A, 35 22R, A61B 504
Patent
active
040087140
ABSTRACT:
Methods and apparatus are provided for deriving an audible indication of a person's brain wave frequency, and for actuating a tape player or the like to deliver a recorded program of material educational in content when said frequency reaches a preselected frequency value or range. Means may also be included for rendering the audible indication of the measured frequency of the subject person inaudible upon actuation of said tape player.
REFERENCES:
patent: 3846831 (1974-11-01), Johnson, Jr. et al.
patent: 3855998 (1974-12-01), Hildalgo-Briceno
patent: 3896790 (1975-07-01), Dikmen
Stockman, "Proceedings of the Institute of Radio Engineers," Jan. 1951, p. 160.
Narrace John M.
Silva Jose R.
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