Variations in structure and response properties of horizontal cells in the retina of the rabbit.
Variations in structure and response properties of horizontal cells in the retina of the rabbit.
复制标题
兔子视网膜水平细胞结构和反应特性的变化。
DOI：
10.1016/0042-6989(83)90097-4
复制
发表时间：
1983
期刊：
影响因子：
1.8
通讯作者：
Dacheux,RF
中科院分区：
文献类型：
--
作者：
Raviola,E;Dacheux,RF
通过胞内注射辣根过氧化物酶，将兔水平细胞对漫射白色光刺激的反应波形与其解剖结构相关联。在无轴突的水平细胞和轴突轴承细胞的体细胞端的光诱发的超极化可能会表现出一个短暂的高强度刺激的开始，并始终其次是刺激停止杆后效。在这两种类型的细胞的瞬态可能是小的和杆后效非常突出，这种反应模式，然而，更频繁地是一个属性的体细胞端的轴突轴承细胞。轴突轴承细胞的形态是相同的，无论其响应特性。另一方面，无轴突的水平细胞在形状上表现出很大的变化，其中绝大多数具有不对称的树突场。然而，细胞形状和响应特性之间不存在相关性。这些也与视网膜中水平细胞的位置或其长轴相对于视神经乳头和髓线的方向无关。
The response waveform of rabbit horizontal cells to diffuse white light stimulation was correlated with their anatomy by intracellular injection of horseradish peroxidase. In both axonless horizontal cells and the somatic end of axon-bearing cells the light evoked hyperpolarization may exhibit a transient at the onset of high intensity stimuli and is consistently followed by a rod aftereffect at stimulus cessation. In both types of cells the on-transient may be small and the rod aftereffect very prominent; this response pattern, however, is more frequently a property of the somatic end of axon-bearing cells. The morphology of axon-bearing cells is the same regardless of their response properties. On the other hand, axonless horizontal cells exhibit a wide variation in shape and the vast majority of them have asymmetric dendritic fields. No correlation, however, exists between cell shape and response properties. These are also independent of the location of horizontal cells in the retina or the orientation of their long axis with respect to the optic nerve head and medullary rays.