Vasilieva N. Electrical activity and blood circulation of the brain preschool boys with different tempo-rhythmic characteristics of speech.

During research detected peculiarities electrical activity, parameters of the brain blood flow and functional state of sympathetic-adrenal system in children with normal and altered the pace and rhythm of speech. Complex of differences in characteristics of EEG boys with AVMs treated as evidence of of a certain of immaturity of cortico-subcortical relations. Results of functional EEG tests indicate a reduced reactivity and functional insufficiency activating system of the brain stem and insufficient inhibitory influence of the cortex on the subcortical structures. Indicators of cerebral hemodynamics in boys preschool children with deviations tempo-rhythmic characteristics of speech characterized by a substantial increase of peripheral vascular tone, the tone of blood vessels of carotic type with small caliber and vertebral-basilar system right and left hemispheres of the brain. Hormonal hyperactivation of sympathetic-adrenal system in preschool boys with violation tempo-rhythm of speech manifests itself significant increase in the level of catecholamines in urine. Tension of adaptation systems for violation of terms tempo-rhythmic characteristics of the speech is in increasing the number of significant and high correlation connections between indicators of background electrical activity, the blood circulation of the brain and catecholamines.