Illusions
The following is a collection of optical illusions collected by scientists here at Smith-Kettlewell.

From Christopher Tyler's Lab:

Spiral
Five-tined tuning fork?
Figure or ground?

From Matteo Carandini's Lab:

Spinning Spiral: Directions according to Matteo, "One of my longstanding interests is pattern adaptation, which is always a good excuse to show a funny demo. Look at the rotating spiral for 30 s or more, and then look at something you know well, like the back of your hand."

From Suzanne McKee's Lab:

Apparent Motion Illusions

We also recommend these links to optical illusion pages outside our website.

51 Optical Illusions & Visual Phenomena by Michael Bach

A colorful collection of optical illusions by A. Kitaoka

The Room of Nagoya Visual Illusion Experts Group

Illusions and Paradoxes by ScientificPsychic.com

Optical Illusions by At-Bristol

Experiments by Richard Gregory

Demonstrations by Stuart Anstis from UCSD

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