Ishida A T
Section of Neurobiology, Physiology and Behavior, University of California, Davis 95616-8519, USA.
Philos Trans R Soc Lond B Biol Sci. 2000 Sep 29;355(1401):1191-4. doi: 10.1098/rstb.2000.0665.
As is shown magnificently by Heron Island's reef, the visual environment of many fishes includes various light intensities, hues and shapes that can change on large and small scales in space and time. Several articles in this issue address why fishes are sensitive to some of these properties, and how fishes and other aquatic species have acquired or fostered these sensitivities. This article discusses contributions of extrasynaptic ion currents, in a specific population of neurons, to the detection of ambient light levels, the appearance of certain visual stimuli and the disappearance of others.
正如赫伦岛的珊瑚礁所壮丽展示的那样，许多鱼类的视觉环境包含各种光强度、色调和形状，这些在空间和时间上会在大小尺度上发生变化。本期的几篇文章探讨了鱼类为何对其中一些特性敏感，以及鱼类和其他水生物种是如何获得或培养这些敏感性的。本文讨论了特定神经元群体中的突触外离子电流对检测环境光水平、某些视觉刺激的出现和其他刺激的消失所做的贡献。
