Naka K I
Science. 1971 Feb 19;171(3972):691-3. doi: 10.1126/science.171.3972.691.
In the catfish retina there are two types of ganglion cells: in one type (type A cell) a spot of light at the center of its receptive field gives rise to a sustained discharge whereas an annulus gives rise to a transient response, and in the other type (type B cell) the response pattern is reversed for a spot and an annulus. Current injected into the horizontal cell induces spike discharges of the ganglion cell very similar to that elicited by a spot of light or by an annulus. In both types of receptive fields, depolarization of the horizontal cell gives rise to a response of the ganglion cell similar to that elicited by a spot of light, whereas hyperpolarization of the cell gives rise to a response of the ganglion cell similar to that elicited by an annulus. Current through a single injecting electrode could drive two types of cells simultaneously. Interaction between a spot of light and an annulus can also be simulated by replacing one light stimulus by current of the proper polarization injected into the horizontal cells. Results suggest that interactions among three neuronal structures, the receptor, the horizontal cell, and the bipolar cell, produce the basic receptive field organization in the channel catfish.
在一种类型（A 型细胞）中，其感受野中心的一个光点会引发持续放电，而一个光环则会引发瞬态反应；在另一种类型（B 型细胞）中，光点和光环的反应模式则相反。注入水平细胞的电流会诱发神经节细胞的尖峰放电，这与由一个光点或一个光环引发的放电非常相似。在这两种类型的感受野中，水平细胞的去极化会引发神经节细胞的反应，类似于由一个光点引发的反应，而细胞的超极化会引发神经节细胞的反应，类似于由一个光环引发的反应。通过单个注入电极的电流可以同时驱动两种类型的细胞。通过将一个光刺激替换为注入水平细胞的适当极化电流，也可以模拟光点和光环之间的相互作用。结果表明，感受器、水平细胞和双极细胞这三种神经元结构之间的相互作用产生了沟鲶的基本感受野组织。
