Visual discrimination between small objects and large textured backgrounds.
D000200:Action Potentials; D000818:Animals; D006110:Grasshoppers / Q000502:physiology*; D007395:Interneurons / Q000502:physiology; D009039:Motion Perception / Q000502:physiology; D009433:Neural Inhibition; D010507:Periodicity; D014796:Visual Perception / Q000502:physiology*