“Rotating snakes”

Circular snakes appear to rotate ‘spontaneously’.

“Candies”

The two concentric arrays of “candies” appear to rotate in the different directions when we approach or move away from the figure while fixating at the center.

“Umbrellas”

The circles in front appear to rotate counterclockwise.

“Boats”

The ring of boats appears to rotate slowly. The direction is clockwise.

“Rotating checks”

Illusory radial lines appear to rotate. In addition, the inner circle appears to rotate clockwise when seen in peripheral vision

“Absorption”

The surround appears to move to the center. Moreover, the inset and surround appear to rotate in the different directions when observers approach or move away from the figure while fixating at the center

“A waterwheel”

The ring appears to rotate clockwise, slowly. This effect is stronger in peripheral vision