Cab drivers use spatial maps for a living, and one renowned study showed enlargement of that part of the hippocampus in London taxi drivers. Moreover, a follow-up study imaged the hippocampus in people before and after the grueling multiyear process of working and studying for the London cabbie license test {called the toughest test in the world by the New York Times}. The hippocampus enlarged over the course of the process-in those who passed the test.27
( Robert M. Sapolsky )
[ Behave: The Biology of Humans ]
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