[The structural transformations of the human cerebellar cortex from birth to 3 years].

Heterohronia of archi- and neocerebellar regions development was established by means of morphometric analysis of optical thickness, layers and parameters of Purkinje cells in monthly (first postnatal year) and yearly intervals in children from birth up to three years of age. Growth of the cortex diameter in flocculus was shown to occur earlier than in four-angular lobule and to be more intensive on the gyral apex than in deep regions of sulci. Growth of cortical thickness on the gyral apex is connected basically with the granular layer thickening, with the thickening of molecular and granular layers for the gyral lateral side and with that of molecular layer for the fundus of sulcus. Differences in the growth and differentiation speed were in Purkinje cells in topographically diverse cortical loci.