How is the visual. Information channel formed in the avian retino-tectal system?

视觉效果如何。

• 批准号: 12660271
• 负责人: NAITO Jumpei
• 金额: $ 1.6万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12660271/
• 关键词: Vision; Development; Retinal ganglion cell; Bird; Chick embryo; Morphometry; Vision; Retina; Tectum; Development; Chick embryo

Six groups of chick RGCs, which were reported in our previous paper, convey characteristic elementary information of vision to certain primary visual centers through their channels that are formed by each RGC groups. In present study, we investigated the formation of the visual information channels. On E8 (embryonic day 8), all RGCs showed the narrow dendritic field by poor branching of dendrites. On Ell, first two groups, Group Ic-like cells with narrow dendritic field and Group lls/llc-like cells with middle-sized dendritic field, were discriminated. On E14, other two groups, Group Ills-like cells and Group Ivc-like cells, both of which showed wide dendritic fields, were appeared. All six groups were observed on E17. Laminar patterns by dendritic arborization in the inner plexiform layer (IPL) were various by ganglion cell types. Group l-like cells and Group Ills-like cells extended their dendrites into two laminas and a single lamina of the IPL, respectively. The dendrites of Group l-like and Group IV-like cells ramified into more than two laminas. More precise analysis on this issue is now in progress. We could considerthat it is important and advantageous forall animals, which use the light information in their life, to divide it into some elementary channels.

我们在先前的论文中报道了六组小鸡的RGC，它们通过各自形成的通道将视觉的特征性基本信息传递给特定的初级视觉中枢。本研究探讨了视觉信息通道的形成。在E8（胚胎第8天），所有的RGCs显示出狭窄的树突领域的穷人的树突分支。在E11上，区分前两组，具有窄树突野的Ic类细胞和具有中等大小树突野的Ils/llc类细胞。在E14，出现了另外两组，III类细胞和IVC类细胞，这两组细胞都显示出宽的树突状野。在E17观察所有6组。内丛状层（IPL）的树突状分支的层状模式因神经节细胞类型而异。I组样细胞和III组样细胞的树突分别延伸到IPL的两个层和一个单层。类Ⅰ型和类Ⅳ型细胞的树突分叉成两层以上。目前正在对这一问题进行更精确的分析。我们可以认为，将光信息分成几个基本通道，对于所有在生活中使用光信息的动物来说，都是重要的，也是有利的。

项目成果

A.Fujiwara: "The developmental study on lamination of the optic tectum in relation to the retinotectal projection in chicks and chick embryos"J. Vet. Med. Sci.. 62(5). 511-516 (2000)

A.Fujiwara：“小鸡和鸡胚胎中视顶盖分层与视网膜顶盖投射相关的发育研究”J。

Fujiwara A., Ohozone Y., Naito J.: "The olevelopmental study on lemination of the optic tecfum in relation to the retinotectal projection in chicks and chick embryos."J. vet. Med. Sci. 62(5). 511-516 (2000)

Fujiwara A.、Ohozone Y.、Naito J.：“与小鸡和鸡胚胎视网膜顶盖投射相关的视顶盖发育的 Olevelopmental 研究。”J.

Fujiwara,A.: "The developmental study on lamination of the optic tectum in relation to retinotectal projection……"J.Vet.Med.Sci.. 62. 511-516 (2000)

Fujiwara, A.：“视顶盖分层与视网膜顶盖投射相关的发育研究……”J.Vet.Med.Sci.. 62. 511-516 (2000)

A. Fujiwara: "The developmental study on lamination of the optic tectum in relation to the retinotectal projection in chicks and chick empryos"J. Vet. Med. Sci.. 62(5). 511-516 (2000)

A. Fujiwara：“小鸡和小鸡胚胎中视顶盖分层与视网膜顶盖投射相关的发育研究”J。

Chen,Y.: "Regional Specialization of ganglion cell layer of the chick retina"J.Vet.Med.Sci.. 62. 53-57 (2000)

Chen,Y.：“小鸡视网膜神经节细胞层的区域特化”J.Vet.Med.Sci.. 62. 53-57 (2000)