An optical illusion which shows a series of spinning black and white crosses has prompted a level of online bewilderment not seen since #TheDress.
As with its viral predecessor, the question at the heart of this illusion is about colour: in this case, is the background black or white?
There doesn’t appear to be a correct answer. In fact, some people have questioned whether the image even has a background.
The white crosses spin clockwise before the black crosses spin anticlockwise, forming a moving image confusing enough to give Redditors headaches.
The image, which has been viewed over 4 million times on Imgur, was first spotted by Digg, who suggested it’s based on “figure-ground organisation”.
The term was coined in 1915 by Edgar Rubin, a psychologist who created the eponymous Rubin’s vase, an image showing two heads and a vase.
While it’s possible to see both the heads and the vase almost at once, the mind tends to focus on one or the other at the start – just as we tend to either see the black or white spinning crosses first in this illusion.
type=type=RelatedArticlesblockTitle=Related... + articlesList=58b6b73ae4b0a8a9b7879848,57ff64f4e4b0ee335211b051,57f643b8e4b01265268260d5
-- This feed and its contents are the property of The Huffington Post UK, and use is subject to our terms. It may be used for personal consumption, but may not be distributed on a website.