Kinetic Edges

[quicktime width=”500″ height=”400″]http://anstislab.ucsd.edu/files/2012/11/kineticedges.mov[/quicktime]

Although the three windows are actually aligned vertically, the central window appears shifted to the left or right, in the direction of the drifting dots that it contains.

[quicktime width=”500″ height=”400″]http://anstislab.ucsd.edu/files/2012/11/FadingMotion_nofade.mov[/quicktime]

Eight circular windows, arranged in a circle, contain random dot textures that move counterclockwise. Although the windows themselves are not moving, they appear to rotate together like a ferris wheel. This is a stronger version of the illusion demonstrated above — it introduces continuous illusory movement, not just a static illusory shift. Also, after fixating for a while, you may perceive the windows fade out and disappear.