PERHAPS it is difficult to demonstrate primary constancy scaling independently of the distortion illusions, but its effects are not limited to plane figures. For example, the apparent size of the Moon ...

FOR all the fun we have with them, illusions do serious work in illuminating how our brains work, and in particular how perception works. They may also help us understand how consciousness developed, ...

An optical illusion is a visual phenomenon where our perception of an image differs from objective reality. This image is seen as a 3D distortion illusion, where the arrangement of the lines in the ...