Delboeuf illusions: contour or size detector interactions?
Manipulations of contour lightness were shown to alter the magnitude and direction of the Delboeuf illusion. The data suggest that size detector rather than contour interactions create this visual anomaly.
D005556:Form Perception; D006801:Humans; D007088:Illusions; D009903:Optical Illusions; D012858:Size Perception