You've likely heard of the brain's gray matter – here's why the white matter is important too
- Written by Christopher Filley, Professor of Neurology and Psychiatry, University of Colorado Anschutz Medical Campus

Who has not contemplated how a memory is formed, a sentence generated, a sunset appreciated, a creative act performed or a heinous crime committed?
The human brain is a three-pound organ that remains largely an enigma. But most people...