Abstract
THE visual system of vertebrates mediated by rods is capable of detecting a few quanta of light1,2. The work reported here is concerned with the voltage response to flashes of light in individual bipolar cells, to which the rods send their signals and which, in turn, signal to amacrine and ganglion cells. We measured the absolute sensitivity of rod bipolar cells in the dogfish retina. The photoisomerisation of a single rhodopsin chromophore in only one rod out of 100 leads to a response of 1 mV in the bipolar cell.
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ASHMORE, J., FALK, G. Absolute sensitivity of rod bipolar cells in a dark-adapted retina. Nature 263, 248–249 (1976). https://doi.org/10.1038/263248a0
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DOI: https://doi.org/10.1038/263248a0
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