FIELD: medicine.
SUBSTANCE: with the help of 10 light-emitting diodes, each relating to one of 10 buttons, an examinee is exposed to a sequence of two 50 ms long light impulses with a gap between them, repeating over a constant time span of 1 second. At the first stage, the first LED transmits a sequence of two light impulses with a 5 ms gap. Each next LED transmits a sequence of two light impulses with a 5 ms longer gap than the gap of the previous LED. The examinee selects the last LED, the two light impulses of which he perceives subjectively as a single impulse, and presses the relevant button. At the second stage, the first LED transmits a sequence of two light impulses with a gap equal to the gap of the LED selected by the examinee at the first stage. Each next LED transmits a sequence of two light impulses with a 0.5 ms longer gap than the gap of the previous LED. The examinee selects the last LED, the two light impulses of which he perceives subjectively as a single impulse, and presses the relevant button. At the third stage, the first LED transmits a sequence of two light impulses with a gap equal to the gap of the LED selected by the examinee at the second stage. Each next LED transmits a sequence of two light impulses with a 0.1 ms longer gap than the gap of the previous LED. The examinee selects the last LED, the two light impulses of which he perceives subjectively as a single impulse, and presses the relevant button. That would be evaluated response time of the person's visual system.
EFFECT: reduced measurement time for mass examination.
3 dwg, 3 tbl, 1 ex
