A grayscale ballerina who appears to be moving. A human who can fit in a doll box. A black-and-white prism that appears to change shape when... Optical illusions are a brain feature, not a bug. Here's ...

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When you look at the picture below, do you see straight or curved lines? That's the debate triggered by the viral optical illusion that's now raging on social media. The image is an eight-by-eight ...

Allen Institute researcher Jerome Lecoq points to one of the diagrams that was used in a study focusing on how the brain interprets optical illusions. (Allen Institute Photo / Erik Dinnel) Our brains ...

SEATTLE, WASH.—September 15, 2025—An illusion is when we see and perceive an object that doesn’t match the sensory input that reaches our eyes. In the case of the image below, the sensory input is ...

As you scroll through this article, your brain is hard at work creating the mental world you live in. You probably have a seamless sense that you’re embedded in a world full of other people, objects, ...

Researchers investigate how mice process illusions, highlighting the neural circuitry involved in seeing and perception. An illusion is when we see and perceive an object that doesn’t match the ...

A grayscale ballerina who appears to be moving. A human who can fit in a doll box. A black-and-white prism which appear to change shape when viewed from three different directions. Those are the top ...