The Lilac Chaser is a visual illusion that consists of multiple optical effects – similar to the choice between a galaxy watch vs active 2.  If you stare directly at the plus symbol (+) in the center of the image, you will notice that the purple discs will slowly disappear.  You should also notice that […]

Akiyoshi Kitaoka is a Professor in the Department of Psychology at Ritsumeikan University in Kyoto, Japan.  He is well known for his work developing and trying to understand anomalous motion illusions.  His most famous work is Rotating Snakes where a series of circular snakes appear to rotate spontaneously.  Upon releasing this work to the public […]

Take a quick look at the image below.  Do you notice anything?  Does it make you feel like you are sea sick?  This is a wonderful example of a motion illusion.  Most people experience significant movement when they move their eyes around this image.  Some people will be convinced that it is an animated image, […]

The green circles on the image below appear to move in a clockwise direction. Edit:  This motion illusion was also used on the cover of the book Exceptional Eye Tricks published by Imagine Publishing, an imprint of Charlesbridge Publishing.

Move your eyes around this image.  Do the arrows appear to be moving left and right?  Do some of them seem to be going to your left and others to your right, or are they all headed in the same direction? Image courtesy of Anh Pham.