SUSTAINED AND TRANSIENT NEURONES IN CATS RETINA AND LATERAL GENICULATE NUCLEUS
SUSTAINED AND TRANSIENT NEURONES IN CATS RETINA AND LATERAL GENICULATE NUCLEUS
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DOI：
10.1113/jphysiol.1971.sp009581
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发表时间：
1971-01-01
影响因子：
5.5
通讯作者：
LEVICK, WR
中科院分区：
文献类型：
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作者：
CLELAND, BG;DUBIN, MW;LEVICK, WR
1.猫视网膜神经节细胞可以通过应用一系列简单测试细分为持续和短暂反应类型，这些测试基于对站立对比度、精细光栅图案、对比目标的大小和速度以及是否存在周边效应的反应。该分类等价于Enroth‐Cugell & Robson的“X”/“Y”（线性/非线性）细分，从而得到确认和扩展。持续/短暂分类适用于中心和偏离中心的细胞。3.外侧膝状体神经元也可以用同样的方法分类。偶见同心排列的细胞具有持续性和短暂性的混合特性.同时记录膝状体神经元和一个或多个视网膜神经节细胞提供其兴奋性输入的技术表明，连接对于持续/短暂分类以及中心/偏离分类是特异性的。大多数膝状体神经元仅由相同功能类型的视网膜神经节细胞兴奋地驱动。在少数情况下，输入是混合的，但仅针对持续/短暂分类。5.持续性视网膜神经节细胞的轴突传导速度比瞬时型慢。外侧膝状体神经元也是如此，但在这种情况下，分布显示出相当大的差异。持续/短暂分类是众所周知的视神经纤维分为两个传导组的功能相关性。7.携带持续和短暂信息的通路从视网膜通过外侧膝状体核到纹状体皮质基本上保持分离。
1. Cat retinal ganglion cells may be subdivided into sustained and transient response‐types by the application of a battery of simple tests based on responses to standing contrast, fine grating patterns, size and speed of contrasting targets, and on the presence or absence of the periphery effect. The classification is equivalent to the ‘X’/‘Y’ (linear/nonlinear) subdivision of Enroth‐Cugell & Robson which is thus confirmed and extended.2. The sustained/transient classification applied to both on‐centre and off‐centre cells.3. Lateral geniculate neurones may be similarly classified by the same tests. Occasional concentrically organized cells had a mixture of sustained and transient properties.4. A technique for simultaneous recording from a geniculate neurone and one or more retinal ganglion cells providing its excitatory input showed that the connexions were specific with respect to the sustained/transient classification as well as the on‐centre/off‐centre classification. Most geniculate neurones are excitatorily driven only by retinal ganglion cells of the same functional type. In a few cases the inputs were mixed but only with respect to the sustained/transient classification.5. Sustained retinal ganglion cells had slower‐conducting axons than the transient type. The same was true for lateral geniculate neurones but in this case the distributions showed considerable overlap.6. The sustained/transient classification is the functional correlate for the well‐known segregation of optic nerve fibres into two conduction groups.7. The pathways carrying sustained and transient information remain essentially separate from retina through the lateral geniculate nucleus to the striate cortex.