Physiological response analysis method and apparatus

Details Physiological response analysis method and apparatus Physiological response analysis method and apparatus

1972-09-05

1976-07-20

Hartary, Joseph W.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

128 21R, 179 1SP, 324 77A, 346 13, 346 33R, G01D 104

Patent

active

039710343

ABSTRACT:
A method of detecting psychological stress by evaluating manifestations of physiological change in the human voice wherein the utterances of a subject under examination are transduced to electrical signals and processed to emphasize selected characteristics which have been found to change with psycho-physiological state changes. The processed signals are then displayed, as on a strip chart recorder, for observation, comparison and analysis. An especially useful characteristic is an infrasonic modulation in the voice. Apparatus for performing detection of this type includes a transducer, a magnetic recorder, a series diode, a plurality of integrating capacitors, an amplifier and a chart recorder. A second apparatus includes filter means, an FM discriminator and a detector, a waveform integrator, an amplifier and a recorder for producing a visible record.

REFERENCES:
patent: 2181265 (1939-11-01), Dudley
patent: 3195533 (1965-07-01), Fisher
patent: 3221334 (1965-11-01), Jones

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