THIS OPTICAL ILLUSION WILL BLOW YOUR MIND
posted by Beth Bradley -
If you concentrate on this image for long enough an astonishing thing will happen. After about 30 seconds the swirls of color will disappear entirely. It’s an example of a phenomenon known as Troxler’s fading. It was discovered by Swiss doctor Paul Troxler in 1804, who found that the brain stops paying attention to visual scenes that don’t change.