Visual adaptation modulates a potassium conductance in retinular cells of the crayfish.

@article{Miller2000VisualAM,
  title={Visual adaptation modulates a potassium conductance in retinular cells of the crayfish.},
  author={Clyde S. Miller and Raymon M. Glantz},
  journal={Visual neuroscience},
  year={2000},
  volume={17 3},
  pages={353-68}
}
Crayfish photoreceptors exhibit a voltage-dependent potassium conductance, G(K), that is generally similar to the delayed rectifier channel described in neurons and other arthropod retinular cells. G(K) activation (i.e. the apparent threshold, Vth) occurs near the resting potential and G(K) is substantially reduced by 25 mM extracellular tetraethylammonium (TEA) and by intracellular Cs+ injections. Light exposure, sufficient to reduce visual sensitivity 100-fold, increases Vth (shifts it in the… CONTINUE READING

Similar Papers

Loading similar papers…