Visual Illusions

My colleage Nansi Colley sent me this link to a great visual illusion involving color and motion adaptation. This motivated me to post this link to a library of visual illusions, also assembled by Michael Bach, that are great fun. This library was accessed from visionscience.com, using its 'demonstrations' link. Most illusion effects have their basis in the visual pathway, not in the optics of the eye, and some of the demonstrations are accompanied by a suggested explanation of their neural basis.