Type of response to steady illumination and level of neuronal dark discharge in the central visual pathways.
D000221:Adaptation, Ocular; D000818:Animals; D002415:Cats; D003623:Dark Adaptation; D005829:Geniculate Bodies / Q000502:physiology*; D008027:Light; D008029:Lighting; D009413:Nerve Fibers, Myelinated / Q000502:physiology; D009474:Neurons / Q000502:physiology*; D014793:Visual Cortex / Q000502:physiology*