The Necker cube is an optical illusion first developed in 1832 by Swiss crystallographer, Louis Albert Necker. Made from a wire frame, the 2-D drawing makes it hard to have a stable perception ...

The Necker Cube, an impossible object which illustrates the ambiguity of two-dimensional representations of three-dimensional thought (Image: Raul Gonzalez Perez / SPL Read about all the tactile ...

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 ...

This is bi-stable visual stimuli used for awareness studies. Left diagram shows a classical example, the Necker cube, where the surface depth perception switches over time. On the right, a ...