Method and system for identifying vibrotactile perception thresh

Details Method and system for identifying vibrotactile perception thresh Method and system for identifying vibrotactile perception thresh

1993-07-19

1995-07-18

Hayes, Gail O.

Surgery

Truss

Pad

36441301, A61B 500, G06F 1500

Patent

active

054332117

ABSTRACT:
A method of identifying vibrotactile perception thresholds of tactile nerve endings at a skin site of a subject to assess sensory change in sensory nerve function is disclosed in which the results are substantially void of errors or inconsistencies. The measurement technique involves supporting the body part containing the skin site to be studied, and stimulating the skin surface with vibration under controlled contact conditions in such a way that the threshold at each frequency is mediated by a single mechanoreceptor population. Two known frequencies, within the range of frequencies in which the thresholds are mediated by the same mechanoreceptor population are applied to the skin site and this process is repeated for different mechanoreceptor populations. At each frequency of measurement, sensory responses are obtained from the subject as the vibration amplitude is increased and decreased. These responses are converted into threshold signals from which threshold shift values are established, by reference to normative values, the deviation of which is then compared with a reference inconsistency limit value derived from healthy persons, in order to determine the acceptance or rejection of the threshold signal values derived from the subject. If the threshold signal values are rejected, the test is repeated until acceptable threshold signal values are obtained thereby providing a true response of the subject.

REFERENCES:
patent: 5002065 (1991-03-01), LaCourse et al.
patent: 5022407 (1991-06-01), Horch et al.
patent: 5195532 (1993-03-01), Schumacher et al.

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