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Why do the dots disappear?

02 Sep

Why Evolution Is True

This is one of the most baffling illusions I’ve ever seen. Take a look at the gif below.  First, look at any yellow dot as the figure moves. The yellow dot remains present and stationary. If you concentrate on all three yellow dots, they remain there as well.
But now concentrate on the central green dot. You will see one or more of the yellow dots disappearing and then reappearing sporadically. They are not—this is an optical illusion. The dots remain and your brain simply doesn’t register their presence from time to time. Weird, eh?

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An article by John Whitfield in Nature News, “A brain in doubt leaves it out,” explains the phenomenon:

Yoram Bonneh, of the Smith-Kettlewell Eye Research Institute in San Francisco, and colleagues have been showing people a swirling pattern of blue dots superimposed on some stationary yellow dots1. [JAC: for some reason the…

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Posted by on September 2, 2014 in Science: it works bitches!

 

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