PONZO ILLUSION The Ponzo Illusion is produced with two converging lines bracketing two objects of the same size. The object positioned higher in the field is more tightly bracketed and seen as larger. The example below contains the key elements of this illusion, as well as additional depth cues:







Depth cues which are centrally processed lead to the judgement that one rat is closer than the other. Since they both create retinal images of equal size, the rat viewed as closest is seen as smaller.

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