Spectral characteristics of photoreceptors and horizontal cells in the retina of the Siberian sturgeon Acipenser baeri Brandt.
Identifieur interne : 000229 ( Ncbi/Curation ); précédent : 000228; suivant : 000230Spectral characteristics of photoreceptors and horizontal cells in the retina of the Siberian sturgeon Acipenser baeri Brandt.
Auteurs : V I Govardovskii [Russie] ; A L Byzov ; L V Zueva ; N A Polisczuk ; E A BaburinaSource :
- Vision research [ 0042-6989 ] ; 1991.
English descriptors
- KwdEn :
- MESH :
- cytology : Retina.
- physiology : Action Potentials, Color Perception, Fishes, Photoreceptor Cells, Retina.
- Animals, Microspectrophotometry.
Abstract
In the retina of Siberian sturgeon, three spectral classes of photoreceptors were identified by microspectrophotometry. These were rods, oil drop-containing and oil drop-free cones possessing P549, and oil drop-containing cones possessing P613 and P465. With intracellular recordings, rod-driven, cone-driven, and mixed horizontal cells of luminosity type were found, as well as color-opponent horizontal cells of, at least, 6 kinds. Biphasic R/G cells received hyperpolarizing input either from rods or from green cones; in R/B cells, it was from blue cones. Other three types comprised biphasic G/B (or Y/B), RG/B, and triphasic G/BR cells. So the Chondrostean retina has the color-processing circuitry common for all ray-finned fishes.
PubMed: 1771790
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These were rods, oil drop-containing and oil drop-free cones possessing P549, and oil drop-containing cones possessing P613 and P465. With intracellular recordings, rod-driven, cone-driven, and mixed horizontal cells of luminosity type were found, as well as color-opponent horizontal cells of, at least, 6 kinds. Biphasic R/G cells received hyperpolarizing input either from rods or from green cones; in R/B cells, it was from blue cones. Other three types comprised biphasic G/B (or Y/B), RG/B, and triphasic G/BR cells. So the Chondrostean retina has the color-processing circuitry common for all ray-finned fishes.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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