[Efficiency of a visual system under conditions of uncertainty of the appearance of a moving object].
The effect of uncertainty of a moving object appearance in the noise field upon the coefficient efficiency, we studied. At short durations of presentation (40-80 msec) and high level of external noise, this effect was maximal: magnified 100 times. The efficiency coefficient dependence on the duration of a moving object presentation was shown to be characterized by two maximums. The position of minimum situated between these two maximums was found to be independent of either presence or absence of uncertainty of a number of parameters: such as initial position of the object the image, time of its appearance, noise level, velocity and direction of the movement, and has a latency approximately 120 sec. A functional model of the observed phenomena, has been proposed.
Krasil'nikov
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St. Petersburg State University of Aerospace Instrumentation, 190000, St. Petersburg, 67 B. Morskaya St., Russia.
Shelepin
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IuE
Krasil'nikova
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OI
D006801:Humans; D008954:Models, Biological; D009039:Motion Perception / Q000502:physiology*; D010364:Pattern Recognition, Visual / Q000502:physiology*; D013028:Space Perception / Q000502:physiology