Brain cells communicate with their neighbors by sending a chemical burst from their axonal endings, across a space called the synapse, to stimulate the spine on the next cell.
These drugs act by sending a message to the pain centre in the brain, in order to reduce the pain sensation.
Over the next few months, he and his colleagues accumulated evidence that, in mice at least, when leptin was missing, the brain responded by sending constant signals to the body to eat, eat, eat, and the animals grew immense.
"We are trying to reverse brain-drain by sending skilled refugee teachers to work in sub-Saharan African countries," says Abraham, who fled Ethiopia as a university student in the late 1970s.
It's mostly used in social work professions or clinics where drugs are not the primary method of treatment, and works by stimulating parts of the brain to send a positive signal whenever a desired mood is achieved.
My brain sent a warning signal and I jerked awake with a gasp.
So, the brain sends a signal to the leg muscles to stop working.
"When you hit the ball well, your brain sends a message to its pleasure center.
The brain controls movement by sending electrical signals to our muscles through nerve cells.
Even when standing "still," we rely on proprioceptors — nerve receptors in the muscles, tendons, ligaments and joints of our feet and ankles that communicate sensory signals to our brain, which responds by sending impulses that fire subtle muscle movements in our lower limbs to keep us balanced.
