Volume 29 #4

Contents

1. Molecular physiology of vision: half-century of study
2. Optogenetics and vision
3. Specifics of physiological and biochemical mechanisms of excitation and adaptation in retinal cones
4. A model of orientation recognition mechanisms for the 3-bar two-grade optotypes
5. Structural and functional basis of ambivalent (aerial-aquatic) vision in aquatic mammals
6. Individual optimization of functional treatment in the cases of impaired binocular vision
7. Changes of the choroid of different age groups of Japanese quails Coturnix japonica depending on the spectrum composition of illumination

The model of orientation recognition mechanism for the 3-bar two-grade optotypes is presented. It could be easily implemented (realized) by means of simple neuronal nets. The essential virtue of the model is its capability, due to minor change of settings, to simulate behavior of the three categories of subjects responding differently to the low- frequency components in the stimulus spectrum. Another advantage of the model is that it doesn’t require using stimulus samples for recognition of their orientation.

Key words: human vision, visual acuity, two-grade optotypes, modeling of recognition

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