In his new book, Hallucinations, Oliver Sacks investigates the fundamental differences and similarities of 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. In this podcast from The New Yorker, the author of The Man Who Mistook His Wife for a Hat and Musicophilia discusses how his experiences of drug-taking have enabled him to better understand the symptoms he sees in his patients.
If you've only got five minutes, here's a shorter introduction to the book.