Awakenings by Oliver Sacks

"Hailed as a medical classic, and the subject of a major feature film as well as radio and stage plays and various TV documentaries, Awakenings is the extraordinary account of a group of twenty patients. Rendered catatonic by the sleeping-sickness epidemic that swept the world just after the First World War, all twenty had spent forty years in hospital: motionless and speechless; aware of the world around them, but exhibiting no interest in it -- until Dr Sacks administered the then-new drug, L-DOPA, which caused them, temporarily, to awake from their decades-long slumber."--Publisher's website.