Thus sandwiched, Mark trod in his wake, torn between curiosity and nerves.

Key brain chemicals that carry signals between nerves (shown here) also appear to be out of balance in depressed people.

This results in a loss of communication between nerves in lower body of the animal and the brain.

Dopamine is an important chemical that carries signals between nerves in the brain.

In the lumbar regions, the needle moves between adjacent nerves and does no mechanical damage.

Depression and chronic pain share some of the same neurotransmitters - the chemical messengers traveling between nerves.

Examples include the electric potential developed between muscles or nerves of the body.

The resulting chemical buildup between nerves causes euphoria or feeling "high."

Seizures occur because of problems with communication between nerves.

This led to the idea that direct electrical contact between nerves and muscles mediated transmission of excitation.