Visual images preserve metric spatial information: evidence from studies of image scanning.
Four experiments demonstrated that more time is required to scan further distances across visual images, even when the same amount of  material falls between the initial focus point and the target. Not only did times systematically increase with distance but subjectively larger images required more time to scan than did subjectively smaller ones. Finally, when subjects were not asked to base all judgments on examination of their images, the distance between an initial focus point and a target did not affect reaction times.
D004215:Distance Perception; D005556:Form Perception; D006801:Humans; D007092:Imagination; D011930:Reaction Time; D012858:Size Perception; D014796:Visual Perception