한국인 대뇌의 중신전회 (피질운동장추)의 세포구축학적 연구
Stndies on the Cytoarchitectonics of the Precentral Gyrus(Motor Center) of the Korean Cerebral Hemisphere

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강중칠; 이명복
Issue Date
서울대학교 의과대학
Seoul J Med 1968;9(1):11-39
This investigation is a study on the cytoarchitectonics
of the crown of the cortex in the precentral gyrus of 209
Korean brain (115 brains of the male, from the newforn
to the age of 85, 94 brains of the female, from the
newborn to the age of 61). The thickness of the total
cortex and each cortical layer, the relative neuron density
and the relative glia density in (100,u)3 of each cortical
layer and the relative total neuron and glia densities of
the cortex were observed and the results were summerized
as follows:
1. The mean thickness of the cortex in the 0-lyear
group was 2.597-2.629 mm which was 81% of the
adult cortex thickness and increased very rapidly to 2. 96
2-3. 04Rmm in the 2-5year group which was 94% of
the adult, and thereafter it increased to the adult mean
thickness in the 11-15 year group. After 61 years of age
it became to decrease. The mean thickness of the adult
cortex was about 3. 2 mm. The thickness of the cortex
increased gradually as the frain weight increased to 1,400
gms and thereafter it became to decrease.
2. The highest neuron density in the 0-1 year group
decreased rapidly to the adul tmean value in the 11-15
year group and thereafter it was relatively stable. The
mean neuron density of the adult cortex was 358.0385.4.
As the relationship between the neuron density and the brain weight, it was highest in 300-500gms. stage of
brain weight and decreased gradually to the adult mean
value in the 1,200-1,300 gms. stage and thereafter it
was stable.
3. The glia density in the 0-1 year group was highest
but it was lower than the neuron desity in the same
age group and it decreased very rapidly to the adult
mean value in the 2-5 year group, following this it
gradually increased. The mean value of the adult was
495.1-523.4. In the 500-699 gms, stage of the brain
weight the mean glia density was highest and decreased
very rapidly to the minimum value in the 900-1, 099
grns, stage and thereafter it increased gradually as the
brain weight increased.
4. The nuron density and glia density had no sexual
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College of Medicine/School of Medicine (의과대학/대학원)Dept. of Medicine (의학과)The Seoul Journal of MedicineThe Seoul Journal of Medicine Vol. 09 No.1 (1968)
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