ALBERT EINSTEIN: His brain size was similar to others except that the region responsible for mathematics and spatial perception was 3.5% wider.
V. I. LENIN: Neurons in a particular region of brain were abnormally large and numerous. This gave him strikingly acute and penetrating mental processes.
LONDON TAXI DRIVERS: They are supposed to have a larger than normal hippocampus that enables them to know all the London streets (spatial navigation and short-long term memory).
ARISTOTLE: Believed that the thought functions of brain occur in heart.