The creation and reversal of the Müller-Lyer illusion through attentional manipulation.
A configuration is presented in which both the overestimated and the underestimated portions of the Müller-Lyer illusion are embedded. In free viewing no distortion of length occurs; however, overestimation or underestimation illusions can be produced by simple manipulation of the attentional set, thus demonstrating one cognitive component in the formation of the Müller-Lyer distortion.
D001288:Attention; D003071:Cognition; D006801:Humans; D007088:Illusions; D009903:Optical Illusions; D012858:Size Perception