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The circles appear to rotate. A version of the Uzumaki or 'rabbit ears' illusion.
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The Jittered Squares Illusion. All of the squares in this image are aligned with the ho...
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The Illusory-O illusion. Click on 'additional information' for more details.
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The impact of spatial proximity on the Illusory-O figure. As the gap between the inner ...
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Illusory contours. This display shows the effects of background modulation on illusory ...
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This is the Delboeuf illusion. Here the outer dashed circle in (b) usually appears sma...
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Two examples of the Müller-Lyer illusion.
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(a) The spiral illusion of the Café Wall illusion, in which grey concentric circles ap...
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The impossible colonnade and other variations of a well-known figure.
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The illusion is from a personal communication that Dave Rose received from Kanizsa, c. ...
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A combination of Hering's and Zï¿½llner's illusion. Placing the mouse over the image reve...
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An interactive version of the Poggendorff illusion. The width of the occluding rectangl...