In the most basic terms, the function of norepinephrine is to mobilize the brain and body for action. Norepinephrine release is lowest during sleep, rises during wakefulness, and reaches much higher levels during situations of stress or danger, in what has been called the fight-or-flight response.n the sympathetic nervous system norepinephrine is used as a neurotransmitter by sympathetic ganglia located near the spinal cord or in the abdomen, and is also released directly into the bloodstream by the adrenal glands.
By turning lights off, you could save 10 to 20 percent of your total household electricity usage. You don't necessarily need to turn lights completely off to save energy--use a dimmer switch. Incandescent Lights
The savings of 68 watts times 50,000 hours equals 3,400 Kwh. At $0.10 per Kwh the savings is calculated at $346. The savings are actually more as this number does not include the cost of time and energy to buy and physically replace an incandescent 25 to 50 times over the life of the LED.