- Abbreviated 5-HT from chemical name 5-hydroxytryptamine 
- Synthesized from the tryptophan amino acid tryptophan, which is only obtained from diet.
- Produced and concentrated in the raphe nuclei of the midbrain and brainstem 
- About 200,000/80 to 90 billion neurons are serotonergic but they exert influence throughout the entire brain 
- Controls sleep states, mood, sexual behavior, and anxiety 
- At least 14 types of serotonin receptors (all but one is metabotropic) 
-Precursor to melatonin

Serotonin Neurotransmitter 

A common example of an indolamine monoamine neurotransmitter.  It's IUPAC name is 5-hydroxytryptamine. Serotonin affects mood, sleep, cognition, learning, reward, memory, and many other behaviors, as well as physiological processes.

Serotonin

- Class of monoamines derived from amino acid tryptophan
- Contains a five-sided indole ring in the structure
- Includes Melatonin and Serotonin 

Rutgers University

- Modified amino acids 
- Two principal classes: Catecholamine and Indoleamine neurotransmitters 

Monoamine Neurotransmitters 

Breedlove, S. & Watson, N. (2017). Behavioral neuroscience, eighth edition. Oxford University Press.

Behavioral Neuroscience 8th Edition

- Class of monoamines derived from the amino acid tyrosine
- Contains a six-sided catechol ring in the structure  
- Includes Dopamine, Epinephrine, and Norepinephrine

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