The Necker cube illusion starts with a 2-dimensional drawing of a wire frame cube. When viewing it, observers have to determine if the lower left square on the cube is the face, or if it has an ...

Optical illusions, such as the Necker Cube and Rubin's Vase, trick the brain into seeing one interpretation first and then another, as the image is studied. The human brain effectively switches ...

For example, the Necker cube may be experienced as having either a bottom-front or a top-front interpretation (see Figure 1). Decades of research on polystable illusions have shown that how they ...

Take part in a personality experiment devised by the Open University in conjunction with the BBC. The test should take about 5 minutes to complete. It was developed by Dr Peter Naish. The BBC is ...

You’re probably familiar with plenty of optical illusions, from the Necker cube to the dress that broke the internet. We’ve been discovering such illusions for hundreds of years; in fact, researchers ...