FIELD: medical engineering. SUBSTANCE: device is used for determination of degree of man's fatigue and for diagnostic examinations. Device has two keys, toggle switch, univibrator, rectifier, counter, indication unit, and series-connected mode of operation switch, generator, voltage-to-frequency converter, and source of light pulses. Person under test presses buttons in succession and determines actual value of light flickering critical frequency by means of device. Device allows measurement of true vale of light flickering critical frequency and by means of device. Device allows measurement of true value of light flickering critical frequency and reduction of measurement time. EFFECT: enhanced reliability. 2 dwg
