2006 Second prize
Dartmouth College, USA
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(© 2006 Peter Tse)
Fixate the black fixation point on the far left side of the image. Note that the figure appears to move steadily away from the fixation point, even though it is in fact only moving up and down.
See another version of the illusion
The infinite regress illusion reveals faulty integration of local and global motion signals Peter U. Tse & Po-Jang Hsieh Vision Research. 2006. 46:3881-5
The Infinite Regress Illusion,
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