What hallucination reveals about our minds

Neurologist and author Oliver Sacks brings our attention to Charles Bonnet syndrome – when visually impaired people experience lucid hallucinations. He describes the experiences of his patients in heartwarming detail and walks us through the biology of this under-reported phenomenon.

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Psychotic hallucinations, whether they are visual or vocal, they address you. They accuse you. They seduce you. They humiliate you. They jeer at you. You interact with them.