Richard L. Gregory (1923-2010) was a distinguished British psychologist and emeritus professor of neuropsychology at the University of Bristol.
An excellent introduction to the psychology of vision. It presents what we know, what we don't know, and what we think. Gregory accomplishes this in an astonishingly succinct and successful book. --Steven M. Kastenbaum, Science Books & Films [A] hugely influential book. . . . It stands as the essential guide to Gregory's framework for perception, but also to a whole range of visual demonstrations, illusions, and puzzles that will have you captivated long after you have finished. --Iain D. Gilchrist, Perception