长尾猴(长尾猴)的间脑。第一部分:丘脑和后丘脑。

R M Simmons
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引用次数: 0

摘要

描述了长尾猴(Cercopithecus aethiops)的间脑,并将其与其他灵长类动物,特别是猕猴(Macaca mulatta)的间脑进行了比较。在长尾猴中,丘脑分为六个核群:前核群、中线核群、内核群、背外侧核群、腹外侧核群和后核群。前核组显示退行性前腹核,前内侧核和前腹核之间界限不清。有较大的丘脑间粘连,其中含有内侧中央肌核、中间肌核和联合肌核的腹侧区比含有闭锁旁核和腹旁核的背侧区退行更多。由于腹内侧核不存在,背内侧核被称为内侧核;这明显分为三个部分,每个部分表现出不同的细胞学和结构特征。与低等灵长类动物相比,中核更大、更发达,但与束旁核不完全分开。枕核是丘脑背外侧核的一个巨大的分支。腹外侧丘脑核彼此分化良好:存在一个明显的腹侧背膈核,似乎与其他腹外侧核具有明确的地形和细胞学差异。后内侧腹侧核进一步分化为大细胞部分和细细胞部分。腹侧核是一个独特的实体。外侧膝状体明显分化为两个核:前膝状核和外侧膝状核。外侧膝状核为六层倒置型结构;在高等灵长类丘脑中,它经历了一个前后轴的横向旋转,从原丘脑的背侧位置到现在的腹侧位置。内侧膝状体不像外侧膝状核那样呈层状;它由小的背内侧大细胞部和大的腹外侧小细胞部组成。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The diencephalon of the vervet monkey (Cercopithecus aethiops). Part I: thalamus and metathalamus.

The diencephalon of the vervet monkey (Cercopithecus aethiops) is described and compared with that of other primates, particularly the macaque monkey (Macaca mulatta). In the vervet monkey, the thalamus is divided into six nuclear groups: anterior, midline, medial, dorsolateral, ventrolateral and posterior. The anterior nuclear group shows a regressive nucleus anterodorsalis and a poorly defined demarcation between the nuclei anteromedialis and anteroventralis. There is a large interthalamic adhesion in which the ventral region containing nuclei centralis medialis, interventralis and reuniens, shows more regression than the dorsal region consisting of nuclei parataenialis and paraventralis. As the nucleus medialis ventralis is not present, the nucleus medialis dorsalis is described as the nucleus medialis; this is clearly differentiated into three parts, each part showing different cytological and architectonic features. The nucleus centrum medianum is larger and better developed than that of lower primates but is not entirely demarcated from the nucleus parafascicularis. The pulvinar is an enormous outgrowth from the dorsolateral thalamic nuclei. The ventrolateral thalamic nuclei are well differentiated from one another: a distinct nucleus ventralis dorsomedialis is present and appears to possess definite topographical and cytological differences from those of the other ventrolateral nuclei. The nucleus ventralis posteromedialis is further differentiated into a magno- and a parvocellular part. The nucleus ventralis posteroinferioris is a distinct entity. The lateral geniculate body shows a definite differentiation into two nuclei: pregeniculate and lateral geniculate nuclei. The lateral geniculate nucleus is a six-layered structure which is of the inverted type; it has undergone a lateral rotation through an anteroposterior axis from a dorsal position in the prosimian thalamus to its present ventral position in the higher primate thalamus. The medial geniculate body is not laminated as is the lateral geniculate nucleus; it consists of a small dorsomedial magnocellular and a large ventrolateral parvocellular part.

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