Stock Photo: Jean-Martin Charcot (1825-1903) French neurologist and pathologist, on right, demonstrating production of hypnosis using the sound from a large tuning fork. Picture drawn from life at the Salpetriere Hospital, Paris, Engraving from La Nature, Paris, 1879

Stock Photo: 1746-2715 Jean-Martin Charcot (1825-1903) French neurologist and pathologist, on right, demonstrating production of hypnosis using the sound from a large tuning fork. Picture drawn from life at the Salpetriere Hospital, Paris, Engraving from La Nature, Paris, 1879