PMID: 6419461Jan 1, 1983Paper

Effects of maintained illumination upon [K+]0 in the subretinal space of the isolated retina of the toad

Vision Research
B Oakley

Abstract

Illumination of the vertebrate retina evokes a transient decrease in extracellular potassium concentration, [K+]0, in the subretinal space. During maintained illumination, [K+]0 recovers toward its dark-adapted level. The mechanisms most likely to contribute to this recovery process were examined by using K+-selective microelectrodes to measure [K+]0 in the isolated retina of the toad. Bufo marinus. Although both diffusion of K+ and changes in the rod membrane voltage contribute to the recovery of [K+]0 during maintained illumination, other factors are likely to be involved as well. It is suggested that this recovery process could be due in part to inhibition of the Na+/K+ pump in the rod photo-receptors during maintained illumination.

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Citations

Sep 1, 1990·Documenta Ophthalmologica. Advances in Ophthalmology·W U Mättig, R Hanitzsch
Jan 1, 1983·Vision Research·R H SteinbergE R Griff
Mar 1, 1990·Proceedings of the National Academy of Sciences of the United States of America·R Wen, B Oakley
Sep 1, 1984·The Journal of General Physiology·H Shimazaki, B Oakley
Apr 1, 1986·The Journal of General Physiology·H Shimazaki, B Oakley
Feb 1, 1988·The Journal of General Physiology·J A FoxG L Fain
Jan 1, 1985·International Rehabilitation Medicine·P Eames, R Wood
Aug 1, 1990·Experimental Eye Research·B J Katz, B Oakley

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