S-Space College of Medicine/School of Medicine (의과대학/대학원) Dept. of Medicine (의학과) The Seoul Journal of Medicine The Seoul Journal of Medicine Vol. 09 No.4 (1968)
한국인 대뇌운동전야 (제6피질분야)의 세포구축학적연구 보유
Contribution to Study on Cytoarchitectonics of Premotor AreaCBrodmann's Area 6) in Cerebral Cortex of Korean
- 김재규; 이명복
- Issue Date
- 서울대학교 의과대학
- Seoul J Med, Vol.9 No.4, pp. 25-47
- The cytoarchitectures of the cerebral cortex in the
premotor area (Brodmann's area 6) of 147 Korean
brains (male 79, female 68) have been studied. The
thickness, the relative neuron density and the relative
g lia density were analysed by the age and the bain
1. The mean thickness of the cortex at the 0-1 year
age group was 81 per cent of the adult cortex and
increased rapidly to the average value of the adult
at the age group of 6-10 years. The highest value was
found at the age group of 11-15 years and was
corresponded to that of the 1100-1199gm of the brain weight. The mean thickness of the adult cortex were
3. 11 mm in male and 3. 12 mm in female.
2. The highest neuron density in the 0-1 year group
decreased rapidly to the adult mean value a~ the 2-5
year group and thereafter it had no significant changes.
It decreased to the average values of the adult
when the brain weight was 1100-1199 gm and thereafter
it was relatively stable.
3. The relative glia density was very high in the 0-1
year age group and decreased rapidly to the average
value of the adult at the age group of 2-5 years. It
was minimum at the age group of 6-10 years and
thereafter it increased corresponding with increasing
of age. At the 300-500 gm stage of the brain weight
the mean glia density was highest and decreased to the
minimum value at the 1100-1199 gm and thereafter it
had no distinct changes.
4. The neuron density and glia density had neither
sexual difference nor left-right difference.