Did you know that on average, the human brain loses 85,000 cells each day, but only regenerates 50 new ones? The operations of individual brain cells are now understood in considerable detail, but the way they cooperate in ensembles of millions has yet to be solved. The most promising approaches treat the brain as a biological computer, very different in mechanism from an electronic computer, but similar in the sense that it acquires information from the surrounding world, stores it, and processes it in a variety of ways, analogous to the central processing unit (CPU) in a computer. Continue reading for more.