How does your brain respond to pain? Davis: Everyone experiences pain -- but why do some people react to the same painful stimulus in different ways? And what exactly is pain, anyway? Davis walks you through your brain on pain,
Grandma's Experiences Leave a Mark on Your Genes Your ancestors' lousy childhoods or excellent adventures might change your personality, bequeathing anxiety or resilience by altering the epigenetic expressions of genes in the brain.
Graphic showing the development of the human brain for the first 21 years of life. As we grow, our brain grows and matures, but does not become fully mature until age Our brains develop most rapidly in the first few years of life.