Scientist Changizi (The Brain from 25,000 Feet) kicks off this engaging romp through vision science with a list of the human eye's superpowers: "telepathy, X-ray vision, future-seeing and spirit-reading"; a "theoretical neuroscientist" trained in cognition and biology, he's not kidding. To expose these amazing abilities, and explain the whys of vision (the hows just "make my eyes glaze over"), he poses four challenging questions: "Why do we see in color? Why do our eyes face forward? Why do we see illusions? Why are letters shaped the way they are?" In his answers, Changizi challenges common notions regarding sight. Human color perception, for instance, is based around subtle changes in skin tone which correlate to blood flow, indicating emotions silently--allowing us, in essence, to read the minds of others. Binocular vision, it turns out, is not required for depth perception: in videos game, we "acrobatically navigate realistic virtual worlds as a cyclops." "Future-seeing capabilities" evolved in order to account for a one-tenth-of-a-second lag in perception. A friendly tone, colorful everyday examples and many helpful figures will draw readers--science buffs or not--down the rabbit hole of cognitive theory and keep them there, dazzled. 7 color images, 75 b&w illustrations. (June) --Publishers Weekly online, May 11, 2009
...the novel ideas that Mr. Changizi outlines in "The Vision Revolution"--together with the evidence he does present--may have a big effect on our understanding of the human brain. Their implication is that the environments we evolved in shaped the design of our visual system according to a set of deep principles. Our challenge now is to see them clearly. --The Wall Street Journal, June 19, 2009
Throughout the book, Changizi peppers his explanations with quick, fascinating visual exercises that help to drive his points home...Changizi's theories are appealing and logical, and he backs them with good circumstantial evidence.... One thing is certain: The Vision Revolution will make you wonder the next time you notice someone blush, catch a ball or finish reading a magazine page. --Scientific American MIND, July 2009
Readers, however, need not be well versed in academic debates to enjoy Changizi's lucid explanations. Filled with optical illusions and simple experiments for the reader to perform, this book may be the most fun you'll have learning about human cognition and evolution. --Jennifer Curry, Barnes & Noble Review, July 2009
"the book does present some novel hypotheses--supported by evidence, much of it from Changizi's research.... The writing style is clear and captivating; the illustrations are nicely done and helpful." --Choice Magazine, November 2009
From the Inside Flap
A radically new perspective on human vision is emerging. Groundbreaking research by evolutionary scientist and neurobiologist Mark Changizi is driving a revolution in our understanding of human vision. In asking why we see the way we do, Changizi overturns existing beliefs and provides new answers to age-old questions. Why do our eyes face forward? While binocular vision was helpful to our primate ancestors, its importance for 3-D vision is exaggerated. Squirrels jump from branch to branch just fine with sideways-facing eyes and many athletes, including Hockey Hall of Famer Frank McGee, play with only one eye. HINT: We evolved in a highly leafy environment. Why do we see in color, when most other mammals do not? It's not because it helped our ancestors find ripe fruit. Our color vision has evolved to be extremely sensitive to specific sets of color changes. HINT: Primates with color vision, like us, are the only ones who have areas of bare skin. Why do we see optical illusions? It's not the result of glitches in our visual system. Optical illusions can be traced back to the same specific property of vision. HINT: We are able to catch a ball coming at us much more effectively than we should given the speed at which our brains process visual input. Why do we absorb information so readily by reading? It's not because we've evolved to read; evolutionarily, reading and writing are recent developments. HINT: Language is designed to exploit skills we've refined over tens of millions of years. In The Vision Revolution, Changizi details the conclusions of his innovative fieldwork and their mind-blowing implications for our understanding not just of human vision, but of the way we interact with the world in which we live. You'll never see seeing the same way again.