Optical Illusion

on Nov. 22, 2016, 6:46 p.m. UTC

There's something I've noticed on Art Piece I while it's spinning. If I stare at the center of the spiky ball for about 5 seconds and then look to the left of it, the leaves seem to waver and move for a brief instant. This is not due to any tricks on my part. The background image is quite stationary. The effect is probably the result of how the brain perceives motion, but you'd need a cognitive psychologist to explain it.