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果蝠视放射纤维向背外侧膝状核的投射组织

Organization of the retinofugal fibers to the dorsal lateral geniculate nucleus of Pteropus giganteus.

作者信息

Pentney R P, Cotter J R

出版信息

Exp Brain Res. 1981;41(3-4):427-30. doi: 10.1007/BF00238902.

DOI:10.1007/BF00238902
PMID:7215504
Abstract

The projection of the retina to the dorsal lateral geniculate nucleus was studied following unilateral enucleations and intraocular injections of tritiated proline in the fruit bat, Pteropus giganteus. Three cell laminae (lamina 1, 2, 3) were identified in Nissl preparations. Input from the two eyes to the laminae was partially overlapping and segregated. At levels where th input was clearly segregated the input from the contralateral eye ended in the outer portions of the three laminae while the input to the laminae from the ipsilateral eye ended along the medial edge of the optic tract (lamina S) and the inner portions of the three laminae. These results indicate that the organization of the projection is similar to that described in other mammals, i.e., the terminals of input fibers from the retina form concealed terminal laminae and they are to some degree segregated to specific terminal zones within laminae.

摘要

在对果蝠(印度狐蝠)进行单侧眼球摘除术并向眼内注射氚化脯氨酸后,研究了视网膜向背外侧膝状核的投射。在尼氏染色标本中识别出了三个细胞层(第1层、第2层、第3层)。来自双眼的输入部分重叠且分离。在输入明显分离的层面,来自对侧眼的输入终止于三个细胞层的外侧部分,而来自同侧眼的输入则沿着视束的内侧边缘(第S层)以及三个细胞层的内侧部分终止。这些结果表明,这种投射的组织方式与其他哺乳动物中所描述的相似,即来自视网膜的输入纤维的终末形成隐蔽的终末层,并且它们在一定程度上被分隔到细胞层内的特定终末区域。

相似文献

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本文引用的文献

1
The cytoarchitecture of the lateral geniculate body in the cat in relation to the distribution of crossed and uncrossed optic fibers.猫外侧膝状体的细胞构筑与交叉和不交叉视神经纤维分布的关系。
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3
Multiple projection of the visual field to the medical portion of the dorsal lateral geniculate nucleus and the adjacent nuclei of the thalamus of the cat.
猫的视野在背外侧膝状核的内侧部分及丘脑相邻核团的多重投射。
J Comp Neurol. 1969 Jul;136(3):295-315. doi: 10.1002/cne.901360304.
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Retinofugal pathways in two marsupials.两种有袋动物的视网膜传出通路。
J Comp Neurol. 1976 Dec 1;170(3):391-413. doi: 10.1002/cne.901700309.