哺乳动物的视觉：视杆细胞是一种经济实惠的选择。
Mammalian vision: rods are a bargain.
作者信息
Warrant Eric J
机构信息
Department of Cell & Organism Biology, Zoology Building, University of Lund, Helgonavägen 3, S-22362 Lund, Sweden.
出版信息
Curr Biol. 2009 Jan 27;19(2):R69-71. doi: 10.1016/j.cub.2008.11.031.
PMID:19174142
Abstract
To maintain resting potentials in darkness, rod and cone photoreceptors incur a significant energy cost. But in brighter light, rods become energetically 'cheaper' than cones, which might explain the evolution of the vertebrate duplex retina.
摘要
为了在黑暗中维持静息电位，视杆和视锥光感受器会产生巨大的能量消耗。但在较明亮的光线下，视杆在能量方面比视锥“更经济”，这或许可以解释脊椎动物双重视网膜的进化。
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