Effects of the rod receptor potential upon retinal extracellular potassium concentration.
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چکیده
منابع مشابه
Effects of the rod receptor potential upon retinal extracellular potassium concentration
It has been hypothesized that the light-evoked rod hyperpolarization (the receptor potential) initiates the light-evoked decrease in extracellular potassium ion concentration, [K+]o, in the distal retina. The hypothesis was tested using the isolated, superfused retina of the toad, Bufo marinus; the receptor potential was recorded intracellularly from red rods, and [K+]o was measured in the phot...
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In order to understand the electrochemical behavior of a living cell at a low extracellular potassium concentration, a model is constructed. The model involves only the ATP driven sodium-potassium pump, and the sodium and potassium channels. Predictions of the model fit the N-shape of the current-voltage characteristic at low extracellular potassium. The model can, furthermore, quantitatively a...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1979
ISSN: 0022-1295,1540-7748
DOI: 10.1085/jgp.74.6.713