Editing Serotonin (section)

=====Social interaction=====
One of the most researched aspects of social interaction in which serotonin is involved is aggression. Aggression is regulated by the 5-HT system, as serotonin levels can both induce or inhibit aggressive behaviors, as seen in mice (see section on Mice) and crabs.<ref name="Olivier_1989" /> While this is widely accepted, it is unknown if serotonin interacts directly or indirectly with parts of the brain influencing aggression and other behaviors.<ref name="Bacqué-Cazenave_2020" /> Studies of serotonin levels show that they drastically increase and decrease during social interactions, and they generally correlate with inhibiting or inciting aggressive behavior.<ref>{{cite journal | vauthors = Huber R, Smith K, Delago A, Isaksson K, Kravitz EA | title = Serotonin and aggressive motivation in crustaceans: altering the decision to retreat | journal = Proceedings of the National Academy of Sciences of the United States of America | volume = 94 | issue = 11 | pages = 5939–5942 | date = May 1997 | pmid = 9159179 | pmc = 20885 | doi = 10.1073/pnas.94.11.5939 | doi-access = free | bibcode = 1997PNAS...94.5939H }}</ref> The exact mechanism of serotonin influencing social behaviors is unknown, as pathways in the 5-HT system in various vertebrates can differ greatly.<ref name="Bacqué-Cazenave_2020" />