Akiyoshi Kitaoka's Rotating Snake Illusions (image) National Institutes of Natural Sciences Share Print E-Mail Caption People perceive clockwise or counter-clockwise motion depending on color alignment. Negative controls (non-illusions) for which people perceive no motion are presented in the right panel. To experience stronger illusory motion perception, please refer to "Akiyoshi's illusion pages." http://www.ritsumei.ac.jp/~akitaoka/index-e.html Credit Akiyoshi Kitaoka Usage Restrictions Please cite the owner of the material. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.