Volume 32 #4

Contents

1. Threshold duration of sound signals for their sources approaching and withdrawing under condition of high-frequency hearing loss modeling
2. The nature of changes in impulse activity of neurons of hypothalamic supraoptic nucleus following prolonged exposure to vibration
3. Visual acuity of ophthalmologically healthy people and features of form the foveal pit of the retina
4. Characteristics of morphological development of the extreme retinal periphery near ora serrata
5. The effect of local diascleral stimulation of the extreme and middle peripheral parts of the retina on foveal contrast sensitivity and color recognition
6. Neural encoding mechanism of the symmetrical crosses in the visual system
7. Mapping of enclosed buildings using mobile radio tomography
8. Projectively invariant description of non-planar smooth figures. 2. On recognition of ovaloids of revolution

A comparison of the results of the psychophysical experiment, interpreted in terms of the vector model of signal encoding in the nervous system, with the data presented in the literature studies of the properties of neurons in the visual cortex helped to identify the neural mechanism of detection of symmetric crosses. The visual perception of symmetrical crosses by dedicating two sensory characteristics: shape and location of the cross in the visual field. A neural network encoding symmetric crosses is the result of the interaction of three types of neurons-detectors of lines in the visual cortex with different detector properties.

Key words: visual perception of symmetric crosses, subjective evaluation of differences between pairs of images, multidimensional scaling, vector coding model in the nervous system, block diagram of neural network of symmetric crosses coding

DOI: 10.1134/S0235009218040042

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