Light changes the membrane potential and ion balances of retinal rod disks.
Light stimulation of rod cells in vertebrate eyes may cause Ca2+ release from the intracellular disks. Radiolabelled tracers show that light causes a small hyperpolarization of intact disk stacks and redistribution of the ions Ca2+ and Cl-.
D000818:Animals; D002118:Calcium / Q000378:metabolism*; D002712:Chlorides / Q000378:metabolism*; D008027:Light; D008564:Membrane Potentials / Q000528:radiation effects; D009861:Onium Compounds / Q000378:metabolism; D010786:Photoreceptor Cells / Q000502:physiology*; D011188:Potassium / Q000378:metabolism; D011868:Radioisotopes; D012374:Rod Cell Outer Segment / Q000502:physiology* / Q000528:radiation effects; D012413:Rubidium / Q000378:metabolism; D012964:Sodium / Q000378:metabolism; D014320:Triphenylmethyl Compounds / Q000378:metabolism
D002712:Chlorides; D009861:Onium Compounds; D011868:Radioisotopes; D014320:Triphenylmethyl Compounds; C011561:triphenylmethylphosphonium; D012964:Sodium; D012413:Rubidium; D011188:Potassium; D002118:Calcium