Optical Illusions

Here's a perspective illusion. Which of these spheres appears to be bigger? Wait for the animation to remove them from their context. Now how do their sizes compare?

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More Brain Games

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Researchers: Video games ease pain, reduce anxiety
Childhood immunizations -- together with a host of other painful medical procedures -- could soon become … More »Researchers: Video games ease pain, reduce anxiety
Wii is ‘good for your heart’
Nintendo's easy-to-use, family-friendly Wii console has found its way into the hearts of some 70 million … More »Wii is ‘good for your heart’
5 ways video games are good for you
It's not hard to find stories that blame video games for all of society's problems. From ill-attentive … More »5 ways video games are good for you