title: Color-discrimination tests on fibers in ground squirrel optic nerve.
mesh_terms: D000818:Animals; D001522:Behavior, Animal; D003118:Color Perception; D003119:Color Perception Tests; D009412:Nerve Fibers / Q000502:physiology*; D009900:Optic Nerve / Q000502:physiology*; D012589:Sciuridae / Q000502:physiology*