face looks fine when the whole face is upside-down. It's worth pointing out that the illusion may not be specifically to do with faces, but with things that we are used to seeing one way up.

Puzzle enthusiasts, get ready to be challenged by a vintage optical illusion that's been ... requires flipping the card ...

Take this optical illusion personality test and know your ... If you are one of those readers who observed a young princess with her face upside down, then you come across as a carefree person ...

The effect is also called as Thatcher Illusion. A part of your brain fails to process a picture or a photo of someone with his/her face upside down which causes this optical illusion effect.

When a face is upside-down, the way you recognise it is looking for the important ... Tangent: The face-thinning fact appears to be related to something called the Jastrow illusion, named after Polish ...