The trick lies in repetition. Once the brain sees the same number appear dozens of times, it stops paying close attention. Psychologists often call this “visual fatigue.” Your eyes are scanning, but ...

Our eyes naturally skim patterns. When every cell shows the same three digits, the mind quickly assumes uniformity and stops checking closely. Psychologists say this is tied to “visual search fatigue, ...

A new optical illusion is putting people’s eyesight - and patience - to the test. The challenge looks simple at first glance: a full grid of the number 349 repeated over and over. But hidden somewhere ...