INDIVIDUAL PECULIARITIES CYTOARCHITECTONICS OF MOTOR AND POSTERIOR ASSOCIATIVE AREAS OF THE HUMAN CEREBRAL CORTEX IN POSTNATAL ONTOGENESIS
Vasilyeva V.A., Shumejko N.S.
Federal State “Institute of Developmental Physiology” RAE, Moscow, RUSSIA; firstname.lastname@example.org
Individual variability in cerebral cortex are among the most important in modern neuromorphology.
Task of the study was cytoarchitectonics in the field 4p of motor zone and in the field 37ac of posterior associative zone of the human cerebral cortex from the birth to 20 years old by the aid of the methods of computer analysis of optical images (52 observations).
Sygnificant increase of areas of profil fields (APF) of pyramidal neurons in III layer in the field 4p notes to 6 months, 1 and 3 years, become stable to 12 years, increase to 14 and 17 years and reduce to 20 years. APF in layer III in the field 37ac increases to 6 months, 1, 2, 7 and 10 years, are changeable from 12 to 17 years and becomes stable – from 18 to 20 years.
Individual differences of neurons dimensions are more express in the field 4p in period from birth to 6 years, 8, 12-14 and 19-20 years, but in the field 37ac – to 1, 7, 10, 12-13 and 15-17 years.
Data histogramms analysis in APF of pyramidal neurons showed individual differences in distribution of neurons to measured classes.
Thus, are established age and individual peculiarities of cytoarchitectonics in the fields 4p and 37ac, periods of intensive and slow increasing of APF of pyramidal neurons and differences in distribution of neurons to measured classes in the motor and the posterior associative areas of the human cerebral cortex from birth to 20 years old.