[NONLINEAR ELECTROENCEPHALOGRAPHIC CORRELATES OF AUDITORY-MOTOR INTEGRATION IN BOYS WITH OBTAINED VISUAL DYSFUNCTION]

This research aims to study the nonlinear dynamics of the brain electrical activity in the performance of complex auditory-motor choice reaction. The boys with obtained visual dysfunction (n = 27, vis. OS 0,70 ± 0,04, vis. OD 0,56 ± 0,05 with correction) and normal sighted (n = 27) boys aged from 8 to 12 years were examined. Nonlinear parameters such as embedding dimension, correlation dimension, Lyapunov maximum exponent and Kolmogorov-Sinai entropy were determined. The auditory-motor integration are induced the activation of the right occipital area and the deactivation of the left occipital area in boys with obtained visual dysfunction. This is not typical for the sighted boys. The results are discussed in the context of cross-modal plasticity and supramodal brain organization.