RU2007100650A

RU2007100650A - METHOD FOR EVALUATING THE TIME OF INERTIATION OF A HUMAN VISUAL SYSTEM

Info

Publication number: RU2007100650A
Application number: RU2007100650/14A
Authority: RU
Inventors: Валерий Витальевич Роженцов (RU); Валерий Витальевич Роженцов; Марат Туфикович Алиев (RU); Марат Туфикович Алиев; Игорь Валерьевич Петухов (RU); Игорь Валерьевич Петухов; Анастасия Сергеевна Иванова (RU); Анастасия Сергеевна Иванова
Priority date: 2007-01-09
Filing date: 2007-01-09
Publication date: 2008-07-20
Also published as: RU2334453C1

Abstract

Способ определения времени инерционности зрительной системы человека, заключающийся в том, что испытуемому предъявляют последовательность парных световых импульсов заданной длительности, равной 50 мс, разделенных межимпульсным интервалом, равным 150 мс, повторяющихся через постоянный временной интервал 1,5 с, причем на первом этапе измерений уменьшают длительность межимпульсного интервала между световыми импульсами в паре с заданной постоянной скоростью, пока испытуемый не определит оценочно момент субъективного слияния двух световых импульсов в паре в один, на втором этапе измерений увеличивают длительность межимпульсного интервала между световыми импульсами в паре, пока испытуемый не определит момент субъективного ощущения раздельности двух световых импульсов в паре, на третьем этапе измерений уменьшают длительность межимпульсного интервала между световыми импульсами в паре, пока испытуемый не определит момент субъективного слияния двух световых импульсов в паре в один, длительность межимпульсного интервала между световыми импульсами в паре в этот момент времени принимают за ее первое пороговое значение t, отличающийся тем, что на первом этапе измерений уменьшают длительность межимпульсного интервала между световыми импульсами в паре со скоростью 10 мс/с, на втором этапе измерений увеличивают длительность межимпульсного интервала между световыми импульсами в паре дискретно с постоянным шагом 0,5 мс, на третьем этапе измерений уменьшают длительность межимпульсного интервала между световыми импульсами в паре дискретно с постоянным шагом 0,1 мс, далее испытуемому предъявляют последовательност�The method for determining the time of inertia of the human visual system, which consists in the fact that the test subject is presented with a sequence of paired light pulses of a given duration equal to 50 ms, separated by an interpulse interval of 150 ms, repeated through a constant time interval of 1.5 s, and at the first stage of measurements they are reduced the duration of the inter-pulse interval between light pulses paired with a given constant speed until the subject determines the moment of subjective fusion of the two light pulses in a pair, in one, at the second measurement stage, increase the duration of the inter-pulse interval between light pulses in a pair until the subject determines the moment of subjective sensation of the separation of two light pulses in a pair, at the third measurement stage reduce the duration of the inter-pulse interval between light pulses in a pair, while the subject will not determine the moment of subjective fusion of two light pulses in a pair into one, the duration of the interpulse interval between light pulses in a pair at this time The changes are taken as its first threshold value t, characterized in that, at the first measurement stage, the duration of the inter-pulse interval between light pulses in a pair is reduced at a speed of 10 ms / s, at the second measurement stage, the duration of the inter-pulse interval between light pulses in a pair is discrete with a constant step 0.5 ms, at the third stage of measurements, the duration of the inter-pulse interval between light pulses in a pair is reduced discretely with a constant step of 0.1 ms, then the sequence is presented to the test person

Claims

The method for determining the time of inertia of the human visual system, which consists in the fact that the test subject is presented with a sequence of paired light pulses of a given duration equal to 50 ms, separated by an interpulse interval of 150 ms, repeated through a constant time interval of 1.5 s, and at the first stage of measurements they are reduced the duration of the inter-pulse interval between light pulses paired with a given constant speed until the subject determines the moment of subjective fusion of the two light pulses in a pair, in one, at the second measurement stage, increase the duration of the inter-pulse interval between light pulses in a pair until the subject determines the moment of subjective sensation of the separation of two light pulses in a pair, at the third measurement stage reduce the duration of the inter-pulse interval between light pulses in a pair, while the subject will not determine the moment of subjective fusion of two light pulses in a pair into one, the duration of the interpulse interval between light pulses in a pair at this time tim accept for its first threshold value t _por1, characterized in that the first phase measurements reduce the duration of the pulse interval between light pulses in a pair with a speed of 10 ms / s, in the second measuring step increases the duration of the pulse interval between light pulses in a pair of discrete constant 0.5 ms step, at the third measurement stage, the duration of the interpulse interval between light pulses in a pair is reduced discretely with a constant step of 0.1 ms, then the test subject is presented with a follower the pair of light pulses of a duration of 200 ms, separated by an interpulse interval of 70 ms, repeated through a constant time interval of 1.5 s, at the fourth stage of the measurements, reduce the duration of the interpulse interval between light pulses paired with a constant speed of 10 ms / s, until the test subject does not assess the moment of subjective fusion of two light pulses in a pair into one; at the fifth stage of measurements, the duration of the inter-pulse interval between light pulses in a pair is increased discretely from at an exact step of 0.5 ms, until the subject determines the moment of subjective sensation of the separation of two light pulses in a pair, at the sixth measurement step, the duration of the inter-pulse interval between light pulses in a pair is reduced discretely with a constant step of 0.1 ms, until the subject determines the moment of subjective fusion of two light pulses in a pair in one, the duration of the inter-pulse interval between light pulses in a pair at this moment in time is taken as its second threshold value t _por2 equal to the time of visual sensation τ τ ₁ , the inertia time is taken equal to the value of the recovery time of the human visual system τ ₂ and is calculated by the formula:

where t _por1 is the duration of the threshold interpulse interval between light pulses in a pair of 50 ms at the moment of subjective merging of these two light pulses into one pair; t _por2 is the duration of the threshold interpulse interval between light pulses in a pair of 200 ms at the moment of subjective merging of these two light pulses in a pair into one.