University of California Press 1992 338 strana odlična očuvanost For centuries physicians and migraineurs have been fascinated by the visual hallucinations, or auras, which often precede a migraine and which are similar to those induced by hallucinogenic drugs or deliria. In a remarkable new chapter, illustrated with startling full-color paintings by migraine sufferers, Dr. Sacks draws on recent advances in chaos theory and neural simulation to describe these `hallucinatory constants` and what they reveal about the working of the brain. Another important addition to the 1992 edition discusses newly developed drug therapies for migraine, as well as alternative, nondrug approaches. Only Oliver Sacks`s boundless curiosity and rich imagination could yield such a fresh, comprehensive view of one of humankind`s oldest afflictions.