The average adult human brain weighs just under three
pounds, yet it's the most powerful organ in the body. Nicole Joseph, CAS/BA
'03, a psychologist in private practice in Northern Virginia, knows that well.
For seven years she's been seeing patients ranging from elementary school
students to adults approaching retirement. A pre-med major at AU, she was always
fascinated by the brain and decided that "psychology would afford me more of an
opportunity to have a longer term, more personal relationship with my
Just how the brain works remains largely a mystery. We know
that about 80 percent of the contents of the cranium is brain matter, while
equal amounts of blood and cerebrospinal fluid, the clear liquid that buffers
neural tissue, make up the rest, according to the website Live Science. The
brain is made up of more than 100 billion nerve cells, each connected to about
10,000 other cells, giving the brain approximately 1,000 trillion neural
That's some mind-blowing stuff.