title: Closure of ionic channels in turtle cones.
abstract: Recent observations from turtle cones on the kinetics of the light response and the variance and power spectrum of spontaneous noise are discussed in terms of the behaviour of membrane ionic channels.
mesh_terms: D000818:Animals; D001692:Biological Transport; D007477:Ions; D007700:Kinetics; D008027:Light; D010786:Photoreceptor Cells / Q000502:physiology*; D014426:Turtles; D014785:Vision, Ocular / Q000502:physiology*
chemical_list: D007477:Ions