Optical Illusions: The Science of Visual Perception

Does not disappoint. Set out well

One of the most beautiful and wonderful books I own is Al Seckel's "Masters of Deception: Escher, Dali & the Artists of Optical Illusions" (2004). Unlike most other books on illusions, the book itself is a creative tour de force. And Seckel supplements his creation with visually striking and important media at his website. I think I've already given away as many as ten copies of that book to family and friends since its release. Another of Seckel's books that I refer to frequently "Incredible Visual Illusions: You won't believe your eyes" (2003). That book has twenty chapters, each containing a different class of illusion. As a sensory scientist who teaches courses on sensation, perception and cognition, I find this book useful because it organizes a nice collection of illusions into meaningful categories that are relevant to me. In this work, as in Seckel's many others, the author acknowledges many renowned vision scientists. I imagine that the book's organization benefited from Seckel's association with these people. Seckel's new book is "Optical Illusions: The Science of Visual Illusions." This is a fine book, with 281 optical illusions (one per page). The book begins with a four page essay on illusions. This is followed 281 pages of illusions, each printed to fill one page. Many of the illusions have been published by Seckel and others previously. A few of the illusions are new. The illustration section is followed by 24 pages containing BRIEF explanations of each illusion. Each explanation is, on average, seven or eight sentences. I have one major criticism of the new book. The title is highly misleading. The book title suggested to me a book that would delve into science, in a scholarly way, at least at the level of a Sensation and Perception undergraduate textbook. I was hoping for something of a sequel to Masters of Deception (e.g., "The Science of Deception"?). However, this book is not about the science of visual perception or of illusions. It is not even about "optical" illusions, as most illusions are explainable in terms of perceptual and cognitive processes beyond simple optics. Sure there are 24 pages of explanation at the very end of the book, but these are generally not deep, satisfying explanations. And there is no reference list that would allow the casual reader to track down important scientific articles. One superb, beautiful resource on the science of visual illusions is Michael Bach's website, "Optical Illusions and Visual Phenomena". Bach's dynamic site is visually striking, presenting some great illusions. The explanation of each illusion is accessible to the novice, but detailed enough to satisfy and impress other perceptual scientists. Bach generously acknowledges the artists and scientists associated with each illusion, providing scholarly references in each case. Bach lists and explains scientific controversies regarding many of the illusions. I should add that Bach is a first-rate sensory scientist from the University of Freiburg. His electophysiological and psychophysical research is highly-regarded, important, and of high quality. When I have spoken to him in the past (at conferences and at the Smith-Kettlewell Eye Research Institute in San Francisco), I have always been impressed by his knowledge and intellectual passion. Bach and his website are the real deal. There are plenty of other excellent scientific sources on illusions. Richard Gregory, for instance, has written and spoken about many illusions, and he is the prime mover, director, and creator of London's Explororey. Another great innovator and scientist is Christopher Tyler, a vision scientist at the Smith-Kettlewell Eye Research Institute. Among sensory scientists, Tyler is widely regarded as a genius and computational/theoretical wizard. He's the guy who invented the autostereogram (aka "The Magic Eye"), and who makes unique observations about art and symmetry. He contributed considerably to San Francisco's Exploratorium. He presents a variety of interesting things at his S-K website. The Exploratorium has a wonderful website on illusions and their explanations that is definitely worth a look. Project Lite and Viperlib are two other impressive, important sites related to the science of illusions. Seckel mentions at his website that he has even more books on illusions that are coming soon. The one that got my attention is the following: "Your Mind's Eye: A Comprehensive Scientific Examination of Visual and Sensory Illusions. Boston: The MIT Press." Seckel writes, "This will have a dual platform (Mac and PC CD Rom) featuring hundreds of interactive illusions, and very rigorous scientific explanations. University level." I hope that this book lives up to its billing. There's no doubt that Seckel's work, combined with a healthy dose of good science, would be an important contribution. I'd love to see Seckel promote scientists and their explanations with the same enthusiasm that he promotes their illusions. Moreover, I feel confident that Seckel has important insights into illusions, and that his ideas have scientific importance. I'm not sure that Seckel has succeeded in expressing these ideas... yet.

Fun book for all ages. It's on our coffee table.

This is one of those books you pick up and cannot put down. There is a huge range of visual tricks here looking into symmetry, shapes, colours, perception and abstract images within images. 279 in total. Some of them are so good (particularly the colour tricks) you simply cannot believe it until you read the accompanying notes in the back of the book to prove it by covering parts of the image! I'm a big fan of these illusions but only wanted one book on them (as the other reviewer has said, they do get repeated from book to book) and this was a great choice. There are some classic old favourites you've seen before but these are kept to a minimum, most of the content I had not seen before.

Fantastic huge book! I purchased this for my daughter for her 8th birthday. She hasn’t set it down, it’s very engaging. There are short explanation sentences under the photos which is helpful for her to understand what she is looking for.