With Courtesy To Professor Akiyoshi Kitaoka, Department Of Psychology (Ritsumeikan University), Kyoto (Japan). Enjoy...
Some of the pictures posted here can cause dizziness or might possibly epileptic seizures.The latter happens when the brain can't handle the conflicting information from your two eyes.
If you start feeling unwell when using this thread, immediately cover one eye with your hand and then leave the page. Do not close your eyes because that can make the attack worse.
"Rotating Snakes"(Not animated,
explanation of the elemental illusion (the enhanced Faser-Wilcox illusion (.PDF)).
9th European Conference On Visual Perception, Bad Nauheim. (Spillmann L, Heitger F, Schuller S (1986)) "Apparent Displacement And Phase UnLocking In Checkerboard Patterns"
"Rotating Tunnel"More "anomalous motion illusion" in this
Link.