Microstructural changes in the posterior associative cortex in children during the first year of life

The aim of the study was to age-related changes in cytoarchitectonics functionally different areas posterior associative cortex temporal and occipital lobes cerebral hemispheres children during first year life. Material methods. material included left male (39 observations) aged from birth 12 months who died accidents without brain damage. Using computer morphometry, thickness cortex, external pyramidal layer area profile field neurons were measured on Nissle stained frontal histological sections taken temporo-parietaloccipital subfield (subfields 37a, 37d) 19 region, which are jointly part cortex. Quantitative data analyzed at monthly intervals. Results. infants lateral surface increased by 3, 6, 9 months; inferior medial surfaces lobe, 5 months. Significant increases cross section III occurred simultaneously: 37as 2 6 months, 37a 3 8 37d All studied neocortex zones characterized two-stage cortical growth thickness, as well a faster rate increase relation total section, relative stability size sublayer III3 their intense 8-9 Conclusion. Microstructural fields have significant differences, reflected dynamics III, neurons. most structural functional these parameters noted end