S-POTENTIALS FROM LUMINOSITY UNITS IN RETINA OF FISH (CYPRINIDAE)
S-POTENTIALS FROM LUMINOSITY UNITS IN RETINA OF FISH (CYPRINIDAE)
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DOI：
10.1113/jphysiol.1966.sp008003
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发表时间：
1966-01-01
影响因子：
5.5
通讯作者：
RUSHTON, WAH
中科院分区：
文献类型：
--
作者：
NAKA, KI;RUSHTON, WAH
S-电位记录在鱼的单位，从来没有响应去极化。这些超极化单位是Svaetichin和MacNichol（1958）的L单位。显示了来自单个单元的一些组作用谱。对于每条曲线，作用的标准是通过各种波长的光超极化到固定水平。当这些光落在零背景（圆圈）上时，曲线表明两种锥对作用光谱有贡献，一种是Marks的620 nm色素，另一种是纳卡和Rushton（1966 a）的680 nm色素。当光落在固定的绿色背景和固定的红色背景上时，作用光谱发生变化，表明680 nm系统和540 nm绿色系统更突出，如果不适应红色，则不明显。这些观察结果（关于丁鲷）与斯韦提钦和麦克尼科尔（关于鳃鱼科）的结论相反，后者认为作用光谱的形状不会因对色光的适应而改变。例如，在深红色适应下，绿色视锥细胞的贡献实际上绝对更大。得出的结论是，L-单位接收信号从680，620，540 nm，也可能是蓝色锥，量子捕获在所有这些有助于超极化的产生，但它们的相互作用是更复杂的比简单的添加独立的锥效应。
S-potentials were recorded In fish from units which never responded by depolarization. These hyperpolarlzing units are the L-units of Svaetichin and MacNichol (1958). Some sets of action spectra from a single unit are shown. For each curve the criterion of action was hyperpolarization to a fixed level, by lights of various wavelengths. When these lights fell upon zero background (circles) the curves show that 2 kinds of cone contribute to the action spectrum, one with the 620 nm pigment of Marks and one with the 680 nm pigment of Naka and Rushton (1966a). When the lights fell upon a fixed green background a fixed red one, the action spectra changed in a way that Indicated greater prominence of the 680 nm system and the 540 nm green system that was not conspicuous without adaptation to red. These observations (on the tench Tinea) are contrary to the conclusions of Svaetichin and McNlchol (on Gerridae) that the action spectrum is unaltered in shape by adaptation to colored lights. The contribution of the green cones, for example, was actually absolutely greater under deep red adaptation. It is concluded that L-units receive signals from 680, 620, 540 nm and possibly also the blue cones, that the quantum catch in all these contribute to the hyperpolarization produced, but their interaction is more complicated than the simple addition of independent cone effects.