Hallucinations

Description

Hallucinations, for most people, imply madness. But there are many different types of non-psychotic hallucination caused by various illnesses or injuries, by intoxication - even, for many people, by falling sleep. From the elementary geometrical shapes that we see when we rub our eyes to the complex swirls and blind spots and zigzags of a visual migraine, hallucination takes many forms. At a higher level, hallucinations associated with the altered states of consciousness that may come with sensory deprivation or certain brain disorders can lead to religious epiphanies or conversions. Drawing on a wealth of clinical examples from his own patients as well as historical and literary descriptions, Oliver Sacks investigates the fundamental differences and similarities of these many sorts of hallucinations, what they say about the organization and structure of our brains, how they have influenced every culture's folklore and art, and why the potential for hallucination is present in us all.

Oliver Sacks is a physician and the author of ten previous books, including The Man Who Mistook His Wife for a Hat, Awakenings (which inspired the Oscar-nominated film) and Musicophilia. He lives in New York City, where he is Professor of Neurology and Psychiatry at Columbia University. He is the first, and only, Columbia University Artist, and is also a Fellow of the Royal College of Physicians. In 2008, he was appointed Commander of the British Empire.