Tale of the Duelling Neurosurgeons. The History of the Human Brain as Revealed by True Stories of Trauma, Madness, and Recovery, Paperback/Sam Kean

For centuries, scientists had only one way to study the brain: wait for misfortune to strike - strokes, seizures, infections, lobotomies, horrendous accidents, phantom limbs, Siamese twins - and see how the victims changed afterwards.