Medicine: Unmasking the Brain

The human brain is usually thought of as a single organ, and when it is running smoothly, that is the overall effect. But the brain is actually a bundle of many structures, weirdly shaped,*and put together in such a complex tangle that a simple cutaway model gives a poor impression of the whole. And only in the age of tranquilizers has medical science begun to learn how different drugs affect individual parts of the brain. In Philadelphia last week, physicians at the annual meeting of the American Academy of General Practice were fascinated by...

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