1. Education
Kendra Cherry

Serotonin - Psychology Definition of the Week

By April 12, 2010

Follow me on:

Definition: Serotonin is a type of neurotransmitter that is found mainly in the central nervous system and the gastrointestinal (GI) tract. Much of the serotonin is located in the GI tract where it is used to regulate digestion. In the CNS, serotonin helps regulate mood, sleep, appetite, learning and memory. Learn more about serotonin.

Related Reading:

Image courtesy Piotr Bizior


No comments yet. Leave a Comment

Leave a Comment

Line and paragraph breaks are automatic. Some HTML allowed: <a href="" title="">, <b>, <i>, <strike>

©2014 About.com. All rights reserved.