Method and apparatus for determining the thermal sensitivity of

Details Method and apparatus for determining the thermal sensitivity of Method and apparatus for determining the thermal sensitivity of

1986-04-22

1988-08-16

Howell, Kyle L.

Surgery

Truss

Pad

128744, 128399, A61B 500

Patent

active

047636661

ABSTRACT:
To determine the heat or cold sensation or pain threshold of a human being, thermode is applied to the skin of the subject under investigation, and the temperature is varied until the subject feels pain. This pain threshold temperature is maintained for a predetermined period of time and then the subject is requested to adjust the temperature until the same sensation is felt. The pain threshold temperature values obtained by this "tonic" method may be verified or improved by a "phasic" method of applying thermal stimuli, wherein pulse-type thermal stimuli are applied with randomly varying spacings and with temperatures which vary randomly about the pain threshold temperature established by the tonic method.

REFERENCES:
patent: 3533397 (1970-10-01), Scher
patent: 3942515 (1976-03-01), Servos et al.
patent: 4573472 (1986-03-01), Ito
patent: 4585002 (1986-04-01), Kissin
patent: 4653507 (1987-03-01), Laudadio
Severin et al, Pain, vol. 21, Apr. 25, 1985, pp. 369-378.
Maher, Proc. IEEE Aust., vol. 41, No. 4, Dec. 1980, pp. 146-149.

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