postcentral sulcus

The postcentral sulcus paralled to the central sulcus about 8 ~ 13 mm .

中央后沟在中央沟之后8～13mm与其平行。

Conclusion : ( 1 ) The postcentral sulcus appears for the first time on the section that the pyramidal tract has disappeared but dorsal thalamus still present on the most specimens .

结论：（1）多数中央后沟首次出现在锥体束消失而背侧丘脑仍然存在的断面上；

Results The emerging times of grooves in parietal lobes and occipital lobes differed greatly ; postcentral sulcus began to appear in the 5th month and were well formed in the 8th month ;

结果顶叶、枕叶脑沟出现时间差别较大，中央后沟从第5月龄开始出现，至第8月龄全部出现；

Results : ( 1 ) On the section of the postcentral sulcus appearing for the first time , the appearing rate of the pyramidal tract was 13 % on the left side and 37 % on the right one ;

结果：（1）在中央后沟首次出现的断面上，锥体束大多消失，其出现率左侧13%、右侧37%；