title: Perceived depth is a necessary factor in apparent motion concomitant with head motion: a reply to Shebilske and Proffitt.
mesh_terms: D055592:Biophysical Phenomena; D001703:Biophysics; D003867:Depth Perception / Q000502:physiology*; D006801:Humans; D009039:Motion Perception / Q000502:physiology*; D012160:Retina / Q000502:physiology*