Abstract
The article raises important problem of the causes of functional brain asymmetry and interhemispheric interaction of children with pseudobulbar dysarthria. The left hemisphere is dominant in relation to speech function for the absolute majority of people. Therefore, the physiological process for forming distribution of functions between hemispheres in ontogeny is important not only from the point of the correct speech development as the highest mental function but also reflects on the wide spectrum of psyche features, perception and cognitive processes, adaptive capabilities of the organism, control over involuntary behavior. There are 40 children with a normal speech development and with a clinical diagnosis of ‘pseudobulbar dysarthria’, determine a lateral phenotype, calculate coefficients of functional asymmetry, and the most common types of violations identify of higher cortical functions. Confirmed information on the prevalence for the right hemispheric dominance among children with speech disorders. The most common types of violations in higher cortical functions are the failure of phonemic analysis and auditory memory.
 Keywords: functional asymmetry, interhemispheric actions, children, pseudobulbar dysarthria
Highlights
Selection and Peer-review under the responsibility of the Fifth International Luria Memorial Congress Conference Committee.Development of higher mental functions for children is closely connected with development of neurophysiological actions in functional specialization of left and right brain hemispheres, in interhemispheric interaction
There is a variety of individual lateral phenotypes among children in motor and sensor spheres, there are some cases of left-handed children in left hemisphere profile
These research are similar to the data of different authors who study the formation of functional brain asymmetry in ontogeny [5, 9, 10]
Summary
Selection and Peer-review under the responsibility of the Fifth International Luria Memorial Congress Conference Committee. Development of higher mental functions for children is closely connected with development of neurophysiological actions in functional specialization of left and right brain hemispheres, in interhemispheric interaction. It shows the increasing of leading role for associated systems in integration of innerhemispheric and interhemispheric interactions. Any complicated psychological activity form is in a complex of both brain hemisphere activity and every brain hemisphere plays its own role. Functional brain asymmetry is a particular feature and has its specific dynamics of development in ontogeny. There is an opinion that both hemispheres for early age
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