METHOD OF EVALUATING HUMAN CAPACITY TO JUDGE DISTANCE Russian patent published in 2014 - IPC A61B3/00 

FIELD: physics.

SUBSTANCE: two light spots are formed on a horizontal surface by light emitters controlled by a computer. A test subject is placed at the middle of a line passing through the centres of the light spots. The area, colour, brightness, direction and speed of movement of the light spots are varied according to a program over a given period of time unpredictably for the test subject. The test subject evaluates transformation and movement of the light spots and changes their position in order to remain at the middle of the line passing through the centres of the light spots. Transformation and movement of the light spots and the test subject are recorded by a video camera situated at a given height over the horizontal surface. The video image is transmitted to the computer. From the moment of changing the area or colour or brightness of direction or speed of movement of the light spots, the computer periodically calculates, with a given period, the position of the middle of the line passing through the centres of the light spots, and the centre of the location of the test subject, the distance between the middle of the line passing through the centres of the light spots and the centre of the location of the test subject, the arithmetic mean of the calculated distances. The capacity of the test subject to judge distance is evaluated based on the arithmetic mean.

EFFECT: method improves the accuracy of evaluating the capacity of a person to judge distance based on results of collaborative operation of the visual, vestibular and muscular analysers and the motor apparatus of the person.