Possible stimulus hypothesis and visual space perception.
D004215:Distance Perception; D006801:Humans; D007088:Illusions; D008433:Mathematics; D008962:Models, Theoretical; D055095:Optics and Photonics; D009949:Orientation; D012160:Retina / Q000502:physiology; D012858:Size Perception; D013028:Space Perception; D014796:Visual Perception