As a young professor, I traveled to Vienna to visit a friend. Knowing that I’d written my first book on psychoanalysis and history, he sent me off to Freud’s old apartment and office, which had been converted to a museum. One rang a doorbell to be admitted, and I was shocked when the museum attendant greeted me by name. Surely, I thought, my old friend had called ahead to play a little joke on me. Again, the attendant spoke to me by name in German, calling me “Professor Doktor Roth” — or so I thought. My wife was right beside me, and she later told me that nothing of the kind had happened. The museum employee had merely told me the price of admission.
I was befuddled by this, and later as I searched in the museum’s library to see if it had a copy of my book, I realized that what I’d heard so clearly was probably an auditory hallucination. I so very much wanted to be recognized in the house of Freud that I’d perceived something that wasn’t there at all.
(Knopf) - ’Hallucinations’ by Oliver Sacks
Most of the examples of hallucinations in Oliver Sacks’s graceful and informative new book do not have the transparent motivations of my episode in the Freud museum. Indeed, most of his examples don’t seem “motivated” at all; they have causes rather than meanings. That is, most of the occurrences seem to be products of neurological misfirings that can be traced to disease, drugs or various changes in neurochemistry. With some important exceptions, hallucinations don’t seem to reveal desires or intentions — the kinds of things that create meaning; they do reflect workings of the brain that cause us to see or hear things that are not really there. Parkinsonian disorders, epilepsy, Charles Bonnet syndrome, migraines and narcolepsy — drawing upon descriptions of these and other conditions by patients and doctors, Sacks explores the surprising ways in which our brains call up simulated realities that are almost indistinguishable from normal perceptions.
As is usually the case with the good doctor Sacks, we are prescribed no overarching theory or even a central argument to unite his various observations. Instead, we are the beneficiaries of his keen observational sense, deep clinical practice and wide-ranging reading in the history of neurology. This doctor cares deeply about his patients’ experiences — about their lives, not just about their diseases. Through his accounts we can imagine what it is like to find that our perceptions don’t hook on to reality — that our brains are constructing a world that nobody else can see, hear or touch.
Sacks has been fascinated by neurology since his student days (he is now almost 80), and he recounts his personal experiences with neurochemistry. He started experimenting with LSD in the 1950s, and when he was a medical resident living in Southern California’s Topanga Canyon in the 1960s, his drug use combined recreation with investigation. Opiates later upped the ante, and Sacks describes his interest and pleasure in altered states of consciousness. He recalls his hallucinations that drew heavily onFroissart and Shakespeare with neither pride nor shame. His perceptions weren’t based in reality, but could he still learn from them?
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