Tectal integration of visual input in the turtle.
D000818:Animals; D001522:Behavior, Animal; D005133:Eye Movements; D006185:Habituation, Psychophysiologic; D009039:Motion Perception; D013477:Superior Colliculi / Q000502:physiology*; D014426:Turtles / Q000502:physiology*; D014793:Visual Cortex / Q000502:physiology*