An anomalous-motion optical illusion based on <a href="//commons.wikimedia.org/wiki/File:Anomalous_motion_illusion1.png" title="File:Anomalous motion illusion1.png">File:Anomalous_motion_illusion1.png</a> .
<a href="//commons.wikimedia.org/wiki/User:Cmglee" title="User:Cmglee">Cmglee</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>