Abstract
EVIDENCE has been presented to show that dark current flows around vertebrate photoreceptors1,2. The outer limb is a sink for this current; the remainder of the receptor is a source. The effect of light is to reduce the current by increasing the resistance of the outer limb membrane3,4. Some authors have, however, suggested complications to this hypothesis5,6. The problem was therefore reinvestigated for the frog, Rana esculenta.
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ERNST, W., JAGGER, W. & BAUMANN, C. Extracellular Currents from Frog Photoreceptors. Nature 248, 253–255 (1974). https://doi.org/10.1038/248253a0
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DOI: https://doi.org/10.1038/248253a0
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