Oliver Sacks: 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.

Oliver Sacks

Neurological anthropologist

Since "Awakenings" stormed the bestseller lists (and the silver screen), Oliver Sacks has become an unlikely household name, single-handedly inventing the genre of neurological anthropology. Full bio

(https://www.ted.com/talks/oliver_sacks_what_hallucination_reveals_about_our_minds#t-7974)