인대뇌 측두극부(Brodmann 제38피질분야) 피질의 세포구축학적 연구

Abstract

The cytoarchitectures in the cortex of the gyrus top of the temporal pole area (Brodmann's area 38) of 159 brains (97 male and 62 female) among various age groups of the Korean have been studied. The thickness of the cortex, relative neuron density and relative glia density in the total cortex and in each cortical layers were examined and summarized as follows. 1. The mean value of the total thickness in adult were: male left 2.91 mm, male right 2.90, female - 45- left 2.92, female right 2.89 mm respectively. The highest value were observed in 11-15 years age group and it showed the tendency of relative stable value after above age group. 2. The average thickness of each cortical layers in adult were: Layer I 0.258-0.264 mrn, [0.120-0. 121, m0.782-0.813, NO. 197-0.281, V 0.438-0.442, VI 1. 048-1. 094 mm respectively. 3. The thickness of total and each cortical layers showed steady increment of thickness while the brain weight reached to 900-1. 099gm, then it showed relative stable value thereafter even though some tendency of increment was recognizable. 4. The mean value of the total neuron density in adult were: male left 368, male right 366, female left 392, female right 391 respectively and the highest value were observed in 0-1 year group. Average value of adult were observed in 6-10 years group and also showed relatively stable value thereafter with the advancing age. 5. The average value of the neuron density in each cortical layers of adult were: Layer I 11-12, [ 6474, mA 40-44, mB 23-30, mC 21-26, N68-72, VA 45-47, VB 28-29, VI A 40-42, VI B 19-23 respectively. 6. The highest value of relative neuron density were observed in 300-499gm brain weight group and decreased rapidly in 900-1. 099 gm stage of brain weight, then it decreased slowly thereafter while the brain weight increases. 7. The mean value of the relative glial density in adult were: male left 509, male right 493, female left 511, female right 504 respectively. The highest value were observed in 0-1 year group and it showed slight tendency of increment with age advancement. 8. The average value of the relative glia density in each cortical layers of adult were: Layers I 21-26, [ 36-42, mA 35-42, mB 37-41. mC 47-53, N 6567, VA 57-62, VB 55-57, VI A 60-67, VI B 62-71 respectively. 9. The highest value of relative glia density were observed in 300-499gm weight group and the lowest were in 1. 100-1. 199 gm group. Thereafter it showed the tendency of increment as the brain weight increased. 10. There was no noticeable difference in cortical thickness, neuron density and glial density among sexual difference or left-right difference.