(HealthDayNews) -- If that cartoon light bulb that appears over your head when you get an idea were ever real, how big would it be?
The average human brain produces the energy equivalent of a 10-watt electric bulb, according to Amazing Facts About the Body, a book published by Doubleday and Co.
However, unlike electricity, which travels near the speed of light (186,000 miles per second), the brain's impulses travel only 200 miles per second.
Scientists believe the relatively slow rate is geared to the body's ability to respond and to avoid what otherwise would become an electrical brain storm that would resemble an epileptic fit.
