Serotonin

Definition

Serotonin is another neurotransmitter that has many functions throughout the body. In the brain, it helps regulate mood, appetite, sleep cycle, memory and learning.

Related terms

Selective Serotonin Reuptake Inhibitors (SSRIs): A class of drugs typically used as antidepressants in the treatment of major depressive disorder and anxiety disorders.

Mood Disorders: Psychological disorders characterized by emotional extremes such as depression or bipolar disorder.

Melatonin: A hormone produced by pineal gland affecting sleep-wake cycles.