Morphology and mosaic of on- and off-beta cells in the cat retina and some functional considerations
Morphology and mosaic of on- and off-beta cells in the cat retina and some functional considerations
复制标题
猫视网膜中β细胞和非β细胞的形态和镶嵌以及一些功能考虑
DOI：
10.1098/rspb.1981.0033
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发表时间：
1981
期刊：
影响因子：
--
通讯作者：
R. Illing
中科院分区：
文献类型：
--
作者：
H. Wässle;B. Boycott;R. Illing
根据内丛状层树突状树的分支水平，在高尔基染色的猫视网膜全鼠中可细分为β型神经节细胞。on- β细胞的树突分支水平更靠近细胞体；off- β细胞向外约10 μm。将辣根过氧化物酶（HRP）注入外侧膝状核后，所有的β细胞都被标记。通过这种方法可以发现，不管视网膜地形如何，大约55%的神经节细胞都是β细胞。利用酶标材料研究开β细胞和关β细胞的空间分布。on - β细胞形成具有规则细胞间距的晶格；非β细胞也有规律地排列。这两个格子是相互独立地叠加在一起的。在猫的视觉系统中，β细胞通常被认为与精细细节的分辨率有关。细胞的嵌合体施加了一些限制，并允许对猫的视觉辨别做出一些预测。
The beta type of ganglion cell can be subdivided in Golgi-stained whole mounts of the cat retina according to the branching level of the dendritic tree in the inner plexiform layer. The dendritic branching level of on-beta cells is nearer to the cell body; that of off-beta cells is about 10 μm further outwards. After horseradish peroxidase (HRP) injection into the lateral geniculate nucleus all beta cells were labelled. In this way it is shown that about 55% of all ganglion cells, irrespective of retinal topography, are beta cells. The spatial distribution of on- and off-beta cells was studied from the HRP-labelled material. On-beta cells form a lattice with regular inter-cell spacings ; off-beta cells are also regularly arrayed. The two lattices are superimposed independently of each other. Beta cells are commonly assumed to be associated with the resolution of fine detail in the cat visual system. The mosaic of beta cells imposes some constraints and permits some predictions to be made with respect to the cat’s visual discrimination.