Best illusion of 2011

reallyreallyreallyreallyreallyreallyreallyreally, really like optical illusions!

Motion can affect how we perceive changes in colour. While watching the animation below, fix your eyes on the white dot in the center. When the surrounding ring is stationary, you’ll notice the dots inside changing colour. But as the wheel rotates, the flashing circles should appear to switch colour less often or not at all. In reality, the colours are changing at the same rate throughout the animation.

The phenomenon, called change blindness, occurs because specific brain areas monitors different locations in our visual field. When an object is moving fast, local detectors don’t have much time to register a colour change so they can remain undetected.

Check it out:

More illusions here.

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