Do nerve cells flow faster than light? Everyone knows that the "speed of light" is extremely quick... but can nerve cells beat it?
According to the Hyper Physics website, the answer to the question of whether nerve cells flow faster than light is no, they do not.
- Nerve cells do not flow at the speed of light, but they can flow anywhere between several hundred feet per second to several hundred meters per second.
- The speed of light is 186,000 feet per second, which is tens of thousands times faster than the fastest thought or nerve impulse could ever travel.
How do Nerve Cells Travel?
So, although nerve cells do not flow faster than light, you might be curious about how they do travel:
- The process of a nerve impulse or thought travelling begins with a cell membrane being excited by some sort of stimulus on the outside of the cell. This stimulus could be as simple as an insect walking along your hand, or something more insistent and immediate, like touching a hot stove with your fingers.
- This excitement of the nerve cells triggers a nerve impulse that moves down the axons, or transmission surfaces, of the nervous system in order to finally transmit that original nerve impulse to the axon terminal bundle.
- In the axon terminal bundle, the nerve impulse is turned into a chemical impulse that powers the muscles or other areas of the body that are needed in order to make the reaction that is desired.
It is electrical impulses travelling through the body that create the nerve response, but they are nowhere near as fast as the speed of light.