Understanding the aging brain

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By linking function with topography, a phrenologist of the past century sowed the seed for our current understanding of how and why the human brain changes with age. Since then, investigators in many fields have reaped one important fact after another. In this fascinating article, Dr Fryer traces the chronology of these discoveries about the brain, the most notable being the differences in function and age-related deterioration of the two cerebral hemispheres.