V. I. Lupandin

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Two groups of children (5-6-year-old and 7-8-year-old) were presented with pairs of sound signals of the same or different durations. Sound signal durations in pairs could be 1.0, 1.2, 1.5, and 2.0 sec. The children had to detect the difference between the sounds in a pair. The obtained data were compared to the analogous results shown by the 18-39-year-old(More)
The investigation of 3-6 aged children's time perception shows that subjective scaling methods, which except the direct magnitude estimates (cross-modality matching, categorization and duration production) reveal the reliable results. These methods may be used for the age, when the "conceptual time" (the concepts of physical time units) has not be developed(More)
Organization of subjective time scales was studied by various methods of duration scaling (reproduction, fractionation, multiplication, evaluation, measuring and cross-model selection). Computation of linear correlation coefficients between physical time and its subjective expression for various methods of scaling in different coordinate systems allows to(More)
The dependence of frog's and cat's electroretinogram (ERG) amplitude upon intensity of light stimuli within the range from 3.5-10(-3) to 3.5-10(3) lk, had a logarithmic character within the limited range of about 1.5--2.0 log. units (from 3--5 to 150--200 lk). This range corresponded to the maximal increase of the ERG amplitude upon a unit of light(More)
The paper deals with the use computer-aided recording the time of visual and motor responses to estimate the severity of mental retardation (MR) in children. It presents standard temporary indices of simple and two differential responses and data on children with MR, obtained by an original computer procedure. In mentally retarded children, the time of(More)
Study of the brightness scaling function within the range from 2.10(-2) to 3.5.10(3) lk revealed that the total curve of brightness estimation was not exactly Stevens power function within this range: the exponent's value and its deviation was variable in different light regions. Presumably, the luminance's region with minimal value of exponent is the most(More)