Scientific journal
European Journal of Natural History
ISSN 2073-4972

PECULIARITIES OF THE FUNCTIONAL CONDITION OF THE CENTRAL NERVOUS SYSTEM OF SCHOOLCHILDREN WITH DIFFERENT DEAFNESS LEVELS

Medvedeva O., Aleksanyants G. and Minko O.
Adaptation of a child with auditory deprivation to environmental conditions is achieved by active participation of central nervous system (CNS), sensory system, among which visual analyzer, vestibular system, proprioceptive sensibility, providing accurate and speed characteristic of movements and also maintaining of body position, play an important role.

Aim of the work is the research of the functional condition of the central nervous system of schoolchildren with different deafness levels.

47 schoolchildren with different deafness levels aged 8 -12 years, studying in special (corrective) educational institutions "Boarding schools I-II type" of Krasnodar region, were examined.

To characterize functional condition of CNS in children with auditory deprivation tapping-test was used by filling in maximum dots on a sheet of a paper with 6 squares upon visual command. After calculating dots in squares the lability of nervous processes was estimated (T-10- dot quantity during first 10 sec, T-30 - 30 sec, T-mark - tapping test estimation in marks), speed endurance (Т-60 - 60 sec), results of nervous processes strength and fatigability (Q - coefficient of fatigability) (V.A. Romanenko, 2005).

As a result of the undertaken research it was determined that hearing-impaired schoolchildren in comparison to a group of almost healthy peers had lower (p<0,05) tapping-test results (Т-10, Т-30, Т-mark). The same data were obtained while analyzing speed endurance results (p<0,001). In its turn fatigability coefficient in children with auditory deprivation was higher than in healthy peers (р<0,05).

Thus, the undertaken research detected that children with different deafness levels have low endurance level and sped- strength characters of complex-coordination CNS activity.


The work is presented for an International Science Conference "Contemporary issues of experimental and clinic medicine". Thailand (Bangkok-Pattaya), December 20-30, 2009. Received by the editorship on 17.11.2009.