Brain Trivia

According to Richard Restak MD in his book entitled Mysteries of the Mind, the human brain is the most intricately organized and densely populated expanse of biological real estate in the world. One cubic millimeter of brain tissue—roughly the size of a grain of coarse sand—contains approximately one hundred thousand neurons that can make about ten billion connections or synapses. These neuronal connections, places where the brain cells meet but do not touch each other, are more important than the brain’s total number of cells. At the rate of one connection per second, some have estimated it would take thirty-two million years to count the synapses (connections) in the average brain.