FLASHBACK ARTICLE: The man in the photo, taken at McGill University in 1951, is 17-year-old Leonard Cohen. He’s wearing a blindfold, and his ears, fingers and hands are encased in padded restraints which prevent movement and cut off all sensory stimulation. This is one of Dr. Donald Hebb’s famous/notorious sensory isolation experiments, for which student volunteers were paid the then-princely sum of $20 a day. Some of the volunteers were unable to stand this torture for more than a few hours. Some tore off the bandages and banged on the door of the isolation chamber, screaming and crying to be released.