Differential diagnosis of sensory abnormalities using a normaliz

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Methods of use

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

351211, 128731, A61B 504, A61B 300

Patent

active

048324809

ABSTRACT:
A method for testing the visual system to detect the presence of disease, and to distinguish disease which has degraded the linear visual pathway from disease degrading the nonlinear visual pathway in a manner which is substantially independent of the stimulus applied to the eye and the connection of the instrumentation to the patient being tested. Three light sources having their amplitude varied at different frequencies stimulate the eye. The response evoked in the brain is detected and Fourier analyzed. The amplitude of selected Fourier components are detected and used to compute a ratio which removes the dependence upon the factors stated above. The Fourier component amplitude factors are selected so that the number of factors in the numerator of the ratio is equal to the number in the denominator and the sum of the orders of the factors in the numerator are equal to the sum of the orders in the denominator. This provides a ration of the response of the linear system to the response of a nonlinear system, which can be compared to a data bank of such test results to determine whether a particular patient being tested deviates enough from the normal response to suspect disease, and the direction and magnitude of that deviation so that the type and extent of disease can be indicated.

REFERENCES:
patent: 4181407 (1980-01-01), Razran
patent: 4493327 (1985-01-01), Bergelson et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Differential diagnosis of sensory abnormalities using a normaliz does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Differential diagnosis of sensory abnormalities using a normaliz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential diagnosis of sensory abnormalities using a normaliz will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1726598

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.