인대뇌 도엽 구벽부피질의 세포구축학적 연구

Abstract

Cytoarchitectonic studies on the sulcar insular cortex have been investigated in 153(89 of male, 64 of female, and a sum of 30G hemispheres) normal human brains taken from newborn to 85 years old korean. ). The average values of cortical thickness, neuronal and glial cell densities in successive gain of age and brain weight are presented, and the average adult values(20~50 years) of them are also determined. 2. Of the adult values the cortical thickness is measured in range of 2218"-'2281 micra, and is corresponding to 78. 3~79. 2% in range at 2857~2879 micra from that of the summit. 3. Of relative total neuronal density the adult value is counted in range of 3S8"-'371 cells at the sulcar site, and is corresponded to I. 06~1. 09 times denser insignificantly than :J34~;H7 cells at the summital value. 4. Of relative total glial density the adult value is shown in range of 188~533 cells at the suclcar site, and is corrcspoding to 1. 02"-'1. 06 times denser insignificantly than 475~G10 cells at the summit value. 5. Insignificantly different cellularities in both the sites are parcelled at significantly different both the thinner sulcar and the thicker summital thicknesses of cortex, respectively. The fact implies a functional differency on the morphological difference between both the sites even at identical insular cortex. G. During throughout postnatal life an increasing glial density with a steady neuronal density III somewhat decreasing cortical thickness could be considered as a profile of an ageing effects at sulcar site of the insular cortex. 7. It is suggested that concommitant architectural analysis for every cortical constituents would be profitable on detecting more intelligent morphological interpretation of the ageing process in cerebral cortex. 8. None of significant statistical difference is noted on sexual or side-difference throughout present observation.