Illusion emerges after tiny ocular movements
Tiny eye movements and blinking can make perfectly frozen snakes appear to dance, a new study shows. The results help explain the mystery of how the Rotating Snakes illusion tricks the brain.
Earlier studies have suggested that the perception of motion is triggered by the eyes drifting slowly away from a central target when viewing the illusion. But by tracking eye movements in eight volunteers, vision neuroscientists at the Barrow Neurological Institute in Phoenix found a different explanation.