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all 7 comments

[–]Keklols 6 points7 points ago

EXPLANATION:

It's a rotating mask

[–]Motifene 3 points4 points ago

Here is a wikipedia article about hollow-face illusions.

[–]mobuco 2 points3 points ago

[–]gotomstergo 2 points3 points ago

Only one out of ten people can see the mask rotating either way.

[–]countafit 0 points1 point ago

You're looking at the inside of the mask at the start.

[–]trollgasm22 -1 points0 points ago

looks to be rotating right at first then you can see that it was going left the whole time. cool illusion.

[–]persistent_illusion 0 points1 point ago

It is called unstable perception. When the visual pattern-recognition part of the brain can make more than one valid interpretation of what it is seeing and makes the wrong interpretation.

http://en.wikipedia.org/wiki/Multistable_perception