Don’t turn this photo upside down – Barely noticeable use of the Thatcher Effect

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The image is a seemingly mirrored version of the original While the singer’s face has been turned upside down, her eyes and mouth have actually been left the right way up. The result is something that looks borderline nightmarish – and people have been going nuts over it.

Barely noticeable use of the Thatcher Effect. A 35-year-old optical illusion is still astounding people. And it all revolves around a rotated picture of Margaret Thatcher. The Margaret Thatcher Illusion — which also gets called the , along with other names — occurs when a picture is turned upside down. But instead of changing everything in the picture, the effect happens when the features, like the mouth and eyes, are kept the right way up. No Look at the actual picture..

The brain is often unable to see that anything strange has happened when the picture was turned the wrong way up. The Thatcher effect is a phenomenon where it becomes more difficult to detect local feature changes in an upside-down face, despite identical changes being obvious in an upright face.

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