S N Kul'ba

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The ability of visual attention to tune to the stimulus size (when this size could not be described by spatial frequencies) was studies. Sinusoidal gratings with frequencies of 1.5, 3, and 6 cycle/degree were used as test stimuli. All these stimuli consisted of 3 periods, consequently, they had different sizes: 2 x 2, 1 x 1, and 0.5 x 0.5 degrees. Three(More)
A phenomenon of a mismatch of the bimodal ERP and the sum of unimodal ERPs was used in our research. It was investigated how the mismatch amplitude depends on audio-visual integration effectiveness. The effectiveness was calculated on basis of approximation degree of an experimental performance to parameters of "ideal observer". It was determined, the(More)
The analysis of the visual segmentation problem involved questions concerned with a signal description as a result of linear filtering, nature following nonlinear transformations, and possible role of a spatial attention in pooling. Different approaches to the visual segmentation problem are compared. Our data suggest a model of visual segmentation. It uses(More)
The results of the screening study of the acuity of schoolchildren between 7 and 17 years old living in Rostov Region of the Russian Federation are discussed in the article. The method of computer optometry was used to measure acuity. 93772 pupils, 48621 girls and 45151 boys, from 150 schools participated in this examination. It was found that there is(More)
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