SEXUAL CHARACTERISTICS OF INTERCORTICAL RELATIONSHIPS IN THE DELTA RANGE OF THE POWER SPECTRUM WHEN PERFORMING ARBITRARY BIMANUAL PURPOSEFUL MOVEMENTS

Abstract

The level of bimanual coordination in men and women is represented by different effectiveness, which is explained by the peculiarities of the organization of the sensorimotor sphere in women and men. The processes of excitation and inhibition are complementary and contribute to the effective construction of the motor system. The aim of the study is to study the sexual characteristics of cortical activation in the delta range and to identify intersystem cortical relationships in the implementation of complexly coordinated bimanual movements. The level of brain activity was assessed by recording the delta rhythm during electroencephalography, and the results of the coordination index using the method of supportmetry. Significant differences in the inhibitory activity of the cerebral cortex and the functional relationships of its centers have been revealed, which causes differences in the resulting effectiveness of motor programs. In the female group, high activity in the delta range of the left frontal associative cortex and a pronounced connection between the occipital and premotor regions on the right are of leading importance in the formation of the motor program. In men, hemispheric asymmetry with inhibition of the right hemisphere contributes to a more perfect result.