Characteristics of psychophysiological indicators of students with different interhemispheric asymmetry

Abstract

Abstact. Psychophysiological parameters (short-term visual memory, speed of successive addition of numbers in visual perception, indicators in the Raven progressive matrices test and the Stroop test) were investigated among left-handed and right- handed men (aged 19-25 years). It was found that the verbal stimuli perception in competition with the corresponding sensory perception of right-handers are more pronounced. At the same time, sense perception of the image and its indicating verbal stimuli associated to a greater extent for left-handed persons. The advantage of the left-handers in the test of the Raven progressive matrices test and the advantage of the right-handers in the sequential addition of single-valued numbers were noticed. All indicators of short-term visual memory demonstrated the advantage of left-handers. The use of factor analysis showed that right-handers have greater productivity in performing the proposed tests. This is mainly due to the functions of the left hemisphere - verbal thinking and consistent processing of information. The second important factor is visual spatial thinking. Productivity of left-handers is largely determined by the function of the right hemisphere: sensory perception and spatial thinking. The third most important factor is the interaction between figurative and verbal thinking and the attentional set-shifting. Thus, right-handers in a greater extent than left-handed people, have more success in intellectual activity because of the development of the functions of the dominant hemisphere.