Apparatus for medical diagnosis utilizing masking of fixation po

Details Apparatus for medical diagnosis utilizing masking of fixation po Apparatus for medical diagnosis utilizing masking of fixation po

1993-03-16

1994-09-13

Hindenburg, Max

Surgery

Truss

Pad

A61B 500

Patent

active

053459440

ABSTRACT:
When eye movement of a subject is detected by an eye movement detecting portion and head movement of the subject is detected by a head movement detecting portion, a line-of-sight calculating portion calculates the line-of-sight according to the detected outputs therefrom. A portion for generating an image to be presented generates an image as a task and presents the image to a task presenting portion. When a fixation point of the line-of-sight of the subject is determined by a fixation point determining portion, a mask image generated by a masking image generating portion is inserted to the task image by an image synthesizing portion, and it is presented at the task presenting portion. A portion for determining degree of advance of dementia determines degree of advance and possibility of Alzheimer's disease based on the particular movement of the line-of-sight of the subject at that time and on the percentage of correct answer to a prescribed task.

REFERENCES:
patent: 4528989 (1985-07-01), Weinblatt
patent: 4889422 (1989-12-01), Pavlidis
"The Significance of Viewing Time in the Visual Fixation Process" by H. Hongo et al., Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, vol. 13, No. 5, 1991, pp. 2156-2158.
"Quantitative Evaluation of Eye Movements as Judged by Sight-Line Displacements" by M. Yamada et al., SMPTE Journal, vol. 95, No. 12, Dec. 1986, pp. 1230-1241.

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