Richard E. Cytowic

An award-winning neurologist on the Stone-Age roots of our screen addictions, and what to do about them.The human brain hasn’t changed much since the Stone Age, let alone in the mere thirty years of the Screen Age. That’s why, according to neurologist Richard Cytowic—who, Oliver Sacks observed, “changed the way we think of the human brain”—our brains are so poorly equipped to resist the incursions of Big Tech: They are programmed for the wildly different needs of a prehistoric world. In Your Stone Age Brain in the Screen Age, Cytowic explains exactly how this programming works—from the brain’s point of view. What he reveals in this book shows why we are easily addicted to screen devices; why young, developing brains are particularly vulnerable; why we need silence; and what we can do to push back.In the engaging storytelling style of his popular TED Talk, Cytowic draws an easily comprehensible picture of the Stone Age brain’s workings—the function of neurotransmitters like dopamine in basic instincts for survival such as desire and reward; the role of comparison in emotion, and emotion in competition; and, most significantly, the orienting reflex, one of the unconscious circuits that automatically focus, shift, and sustain attention. Given this picture, the nature of our susceptibility to digital devices becomes clear, along with the possibility of how to break their spell.Full of practical actions that we can start taking right away, Your Stone Age Brain in the Screen Age offers compelling evidence that we can change the way we use technology, resist its addictive power over us, and take back the control we have lost.

An accessible, concise primer on the neurological trait of synesthesia—vividly felt sensory couplings—by a founder of the field.One in twenty-three people carry the genes for the synesthesia. Not a disorder but a neurological trait—like perfect pitch—synesthesia creates vividly felt cross-sensory couplings. A synesthete might hear a voice and at the same time see it as a color or shape, taste its distinctive flavor, or feel it as a physical touch. In this volume in the MIT Press Essential Knowledge series, Richard Cytowic, the expert who returned synesthesia to mainstream science after decades of oblivion, offers a concise, accessible primer on this fascinating human experience.Cytowic explains that synesthesia's most frequent manifestation is seeing days of the week as colored, followed by sensing letters, numerals, and punctuation marks in different hues even when printed in black. Other manifestations include tasting food in shapes, seeing music in moving colors, and mapping numbers and other sequences spatially. One synesthete declares, "Chocolate smells pink and sparkly"; another invents a dish (chicken, vanilla ice cream, and orange juice concentrate) that tastes intensely blue. Cytowic, who in the 1980s revived scientific interest in synesthesia, sees it now understood as a spectrum, an umbrella term that covers five clusters of outwardly felt couplings that can occur via several pathways. Yet synesthetic or not, each brain uniquely filters what it perceives. Cytowic reminds us that each individual's perspective on the world is thoroughly subjective.

How the extraordinary multisensory phenomenon of synesthesia has changed our traditional view of the brain.A person with synesthesia might feel the flavor of food on her fingertips, sense the letter "J" as shimmering magenta or the number "5" as emerald green, hear and taste her husband's voice as buttery golden brown. Synesthetes rarely talk about their peculiar sensory gift-believing either that everyone else senses the world exactly as they do, or that no one else does. Yet synesthesia occurs in one in twenty people, and is even more common among artists. One famous synesthete was novelist Vladimir Nabokov, who insisted as a toddler that the colors on his wooden alphabet blocks were "all wrong." His mother understood exactly what he meant because she, too, had synesthesia. Nabokov's son Dmitri, who recounts this tale in the afterword to this book, is also a synesthete-further illustrating how synesthesia runs in families. In Wednesday Is Indigo Blue, pioneering researcher Richard Cytowic and distinguished neuroscientist David Eagleman explain the neuroscience and genetics behind synesthesia's multisensory experiences. Because synesthesia contradicted existing theory, Cytowic spent twenty years persuading colleagues that it was a real-and important-brain phenomenon rather than a mere curiosity. Today scientists in fifteen countries are exploring synesthesia and how it is changing the traditional view of how the brain works. Cytowic and Eagleman argue that perception is already multisensory, though for most of us its multiple dimensions exist beyond the reach of consciousness. Reality, they point out, is more subjective than most people realize. No mere curiosity, synesthesia is a window on the mind and brain, highlighting the amazing differences in the way people see the world.

Synesthesia comes from the Greek syn (meaning union) and aisthesis (sensation), literally interpreted as a joining of the senses. Synesthesia is an involuntary joining in which the real information from one sense is joined or accompanies a perception in another. Dr. Cytowic reports extensive research into the physical, psychological, neural, and familial background of a group of synesthets. His findings form the first complete picture of the brain mechanisms that underlie this remarkable perceptual experience. His research demonstrates that this rare condition is brain-based and perceptual and not mind-based, as is the case with memory or imagery. Synesthesia offers a unique and detailed study of a condition which has confounded scientists for more than 200 years.

Case studies of synaesthesia.

In this medical detective adventure, Cytowic shows how synesthesia, or "joined sensation," illuminates a wide swath of mental life and leads to a new view of what it means to be human.Richard Cytowic's dinner host apologized, "There aren't enough points on the chicken!" He felt flavor also as a physical shape in his hands, and the chicken had come out "too round." This offbeat comment in 1980 launched Cytowic's exploration into the oddity called synesthesia. He is one of the few world authorities on the subject. Sharing a root with anesthesia ("no sensation"), synesthesia means "joined sensation," whereby a voice, for example, is not only heard but also seen, felt, or tasted. The trait is involuntary, hereditary, and fairly common. It stayed a scientific mystery for two centuries until Cytowic's original experiments led to a neurological explanation-and to a new concept of brain organization that accentuates emotion over reason. That chicken dinner two decades ago led Cytowic to explore a deeper reality that, he argues, exists in everyone but is often just below the surface of awareness (which is why finding meaning in our lives can be elusive). In this medical detective adventure, Cytowic shows how synesthesia, far from being a mere curiosity, illuminates a wide swath of mental life and leads to a new view of what is means to be human-a view that turns upside down conventional ideas about reason, emotional knowledge, and self-understanding. This 2003 edition features a new afterword.