Functions of retinal cell Jun-ichi Toyoda 1 , Masaaki Fujimoto 1 1Department of Physiology, St. Marianna University School of Medicine pp.291-301
Published Date 1981/4/10
DOI https://doi.org/10.11477/mf.1431905271
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Recent advances in the study of retinal cell function were briefly described. In the photo-receptor the energy of photons absorbed by visual pigments is converted into an electrical signal. In rods, the absorption of one photon by a rhodopsin molecule on the disc membrane causes a decrease in dark inward current through the outer segment plasma membrane to result in a hyperpolarizing potential change of the order of milivolts. Considering the distance between the disc and the plasma membrane, there must be some substance (internal transmitter) that trans-mits the information within the outer segment.

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