Light-induced transmission changes in isolated vertebrate retinas.
Changes in the transmission of infrared light by visible light stimulus were measured in isolated chicken and cattle retinas. Chicken retinas showed a 1st increasing phase, a reducing phase, and a 2nd increasing phase. Cattle retinas lacked the 1st increasing phase. For chicken retinas, hyperosmolarity suppressed the reducing phase and a lack of glucose suppressed the 2nd increasing phase. Presumably, outer segment discs shrink due to light stimulus, thereafter swelling by utilizing energy from inner segments.
D000818:Animals; D002417:Cattle; D002645:Chickens; D005947:Glucose / Q000378:metabolism; D066298:In Vitro Techniques; D007259:Infrared Rays; D008027:Light; D009994:Osmolar Concentration; D010775:Photic Stimulation; D010783:Photometry; D011189:Potassium Chloride / Q000378:metabolism; D012160:Retina / Q000378:metabolism / Q000502:physiology*; D012542:Scattering, Radiation; D012965:Sodium Chloride / Q000378:metabolism
D012965:Sodium Chloride; D011189:Potassium Chloride; D005947:Glucose