Observations on rod coupling in the isolated retina of Bufo marinus.
Rod coupling was studied in the superfused isolated retina of Bufo marinus. Pairs of interacting rods were simultaneously impaled; current injected into one rod caused a current-induced potential in the second rod. Current-induced potentials and input resistance were monitored while changing the superfusate. Interactions were not reduced by removing extracellular Na+ or Cl-, indicating that these conductances do not mediate coupling. Interactions were not eliminated by altering extracellular Ca2+ or decreasing intracellular pH; the interactions are thus resistant to treatments that uncouple cels in other systems.
D000818:Animals; D002024:Bufo marinus; D002118:Calcium / Q000502:physiology; D002712:Chlorides / Q000502:physiology; D006863:Hydrogen-Ion Concentration; D066298:In Vitro Techniques; D008564:Membrane Potentials; D010786:Photoreceptor Cells / Q000502:physiology*; D012964:Sodium / Q000502:physiology
D002712:Chlorides; D012964:Sodium; D002118:Calcium