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Laterality means functional dominance of one in the pair of organs. It represents the external manifestation of integrative activity of cerebral cortex meaning the domination of functionally dominant hand; the usability lateralization depends on the domination of cerebral hemisphere of gestural lateralization and the domination of cerebral hemisphere or gestural lateralization and the influence of the environment. On the basis of laterality population is divided into right-handed and left-handed with a very stressed degree of lateralization and those undecided with a minimal previal of handidness of one hand. In most people the domination of cerebral hemisphere is average or weak and that's the reason why the influence of the environment is of importance when forming the dominant hand. In the clinical practice the hand laterality is used as an index for the type and degree of cerebral hemisphere domination, for condition of gestural laterality with the usability of the dominant hand and form the differentiation of the dominant hand in the case of minimal difference in handidness.

In the neurological examination of the child, there is a growing significance of subclinical semiotics and graphomotor expression. These discrete neurological signs give information about the maturity of complex motor organization and enable the following of cortical structure organization. Subclinical neurological semiotics in the form of muscular hypotonia, synkinesis and disturbed reciprocal coordination of movements at a certain age, present a physiological, developmental appearance, while at a later age they are a sign of immaturity, or of an organic neurological structure damage.

The purpose of this paper was to indicate the link between psychomotor organization and the success of studying. The examined 223 children of the age of 8-12, were divided into three groups. As indicators of psychomotor maturity the following were used: visual motor capabilities--Bender's Visual Motor Gestalt test and complex motor organization--Lury's trial. The paper proves that psychomotor maturity is an important factor in the success of studying in the early school age, and later on other factors from the multi-factorial etiology of unsuccessful studying have an even greater emphasis.

An insufficiently elucidated clinical picture of paroxysmal alternating torticollis in the developing age is considered in this paper. This phenomenon is characterized by inclination of the head temporary on one side and the other, it is of various duration, with pauses and without any disturbances and symptoms. This appearance is observed in children aged 1-5. The authors assume that this rare state is a sequel of asymmetric maturation of the axial tonus. In that case, this torticollis is only the most striking phenomenon in the whole clinical picture of one-sided predomination of the axial tonus in its maturation.