Two Temporal Phases of Light Adaptation in Retinal Rods

  title={Two Temporal Phases of Light Adaptation in Retinal Rods},
  author={Peter D Calvert and Victor I. Govardovskii and Vadim Y Arshavsky and Clint L. Makino},
  journal={The Journal of General Physiology},
  pages={129 - 146}
Vertebrate rod photoreceptors adjust their sensitivity as they adapt during exposure to steady light. Light adaptation prevents the rod from saturating and significantly extends its dynamic range. We examined the time course of the onset of light adaptation in bullfrog rods and compared it with the projected onset of feedback reactions thought to underlie light adaptation on the molecular level. We found that adaptation developed in two distinct temporal phases: (1) a fast phase that operated… CONTINUE READING


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Messengers of transduction and adaptation in vertebrate photoreceptors

  • H. R. Matthews
  • 1990
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