| Serotonin is one of a group of chemical messengers
known as neurotransmitters that carry out communication in the brain and
body. The message molecules flow from a nerve cell or neuron onto other
neurons that act as receivers. There, they attach to a distinctly shaped
area on the neuron called a receptor site. This union, which is like a key
fitting into a lock, triggers signals that either allow the message to be
passed on to other cells or prevent the message from being forwarded.
Since the discovery of serotonin in the 1950s, researchers are finding
evidence that one of its roles is to mediate emotions and judgment. |
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