Our 100 billion microscopic brain cells, called neurons, produce enough electrical signals to power a small light bulb.
It is well established that the brain uses more energy than any other human organ, accounting for up to 20 percent of the body’s total haul. Until now, most scientists believed that it used the bulk of that energy to fuel electrical impulses that neurons employ to communicate with one another.
The brain consumes energy at 10 times the rate of the rest of the body per gram of tissue. The average power consumption of a typical adult is 100 Watts and the brain consumes 20% of this making the power of the brain 20 W.
Electricity is found throughout the human body. The flow of charged ions causes your heart to beat and your muscles to contract.
While awake, your brain generates 10–23 watts of power or enough energy to power a light bulb.