Damaged nerves may send false signals - and you feel real pain, often without a cause.

Those nerves send impulses to the part of the brain that controls memory and emotion.

They also try to observe how the nerves send messages to the brain, such as when a person feels pain.

Pain is not just the message the nerve sends to the brain.

The message that the nerve sends to the brain is called nociception.

When you have an injury or illness, certain nerves send pain signals to your brain.

These nerves send signals to the areas of the brain responsible for the perception of sound.

The optic nerve sends the signals to the visual center in the back of the brain.

It's like every nerve is sending and receiving at the same time.

On a physical level, headaches start when the nerves and blood vessels around the head send pain signals to the brain.