蟾蜍杆状光感受器的闪烁融合特性。

Flicker fusion characteristics of rod photoreceptors in the toad.

作者信息

Nowak L M, Green D G

出版信息

Vision Res. 1983;23(9):845-9. doi: 10.1016/0042-6989(83)90051-2.

Abstract

Critical fusion frequency (CFF) of toad rods was examined at various intensities using intracellular recordings. Data were compared to CFF measurements (as a function of intensity) obtained with the electroretinogram (ERG) and with a horizontal cell. In all instances the rod (and rod mediated) responses produced a curve which increased monotonically to a high frequency asymptote at about 6 Hz. The curves obtained with the ERG and the horizontal cell were double branched. The upper branch exhibited a Purkinje shift and thus must have been produced by cones. Even when using a red background to suppress cone sensitivity, there was no sign of a second rod mediated branch in the CFF curves from this retina.

摘要

使用细胞内记录法在不同强度下检测了蟾蜍视杆细胞的临界融合频率（CFF）。将数据与通过视网膜电图（ERG）和水平细胞获得的CFF测量值（作为强度的函数）进行比较。在所有情况下，视杆细胞（以及视杆细胞介导的）反应产生一条曲线，该曲线单调增加至约6Hz的高频渐近线。通过ERG和水平细胞获得的曲线是双分支的。上分支表现出浦肯野位移，因此一定是由视锥细胞产生的。即使使用红色背景来抑制视锥细胞的敏感性，来自该视网膜的CFF曲线中也没有第二个视杆细胞介导分支的迹象。