Evaluation systems of the brain neurodynamic in the young men with congenital visual dysfunction in a sensory-motor integration

I. V. Redka

Abstract


An assessment of neural systems of the brain of young men with congenital visual dysfunction and sighted young men was examined by methods of nonlinear analysis in resting state and sensory-motor integration. We studied embedding dimension, correlation dimension, the maximum Lyapunov exponent and Kolmogorov-Sinai entropy.

It has been found that the congenital visual dysfunction lead to brain functionality reorganization. In resting state increase of auditory attention and constant flow of information multisensory processes in the right hemisphere have been found in young men with congenital visual dysfunction.

Significant changes of brain systems have been caused in young men with congenital visual dysfunction during sensory-motor integration. Nonlinear dynamics of the brain electrical activity sighted young men did not has been changed significantly.

In young men with congenital visual dysfunction during sensory-motor integration there have been the adequate changes neurodynamics aimed at improving the pitch discrimination and the inadequacy of executive cerebral systems. Apparently, this indicated on difficulty to compare a goal-sound with the standard sound in the working memory and / or on the difficulty to adoption of a decision on the type of motor response.

It has been showed that visual cortex may be involved in the discrimination of sound stimuli during sensory-motor integration in young men with congenital visual dysfunction.


Keywords


EEG; nonlinear dynamics; sensory-motor integration; visual dysfunction; young men

References


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