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 ...

Optical illusions with hidden images are amazing for testing your visual powers. These illusion images challenge your brain's ...

This optical illusion challenges you to find the hidden strawberry among watermelons. This is a real-time test of your ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Andriy Onufriyenko via Getty Images Though optical illusions come in all shapes and ...

When it comes to optical illusions, sometimes our brains can be too smart for their own good, overanalysing visual information that often leads to mind-melting effects. Made to amaze and confuse, even ...

Optical illusions are among the most popular online challenges today. It is considered the simplest way to test an individual ...

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 ...

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 four Pac Man–like black figures. But ...

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, ...

I llusions are everywhere. For example, the moon appears larger when it rests on the horizon than when it is hanging in the sky. Other visual tricks occur when a person perceives an object in an image ...

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 ...