The neuromodulator serotonin (5-hydroxytryptamine, 5-HT) has been associated with impulsive violence

To define the contribution of 5-HT receptor subtypes to behavior, mutant mice lacking the 5-HT1B receptor were generated by homologous recombination. These mice did not exhibit any obvious developmental or behavioral defects. However, the hyperlocomotor effect of the 5-HT1A/1B agonist RU24969 was absent in mutant mice, indicating that this effect is mediated by 5-HT1B receptors. Moreover, when confronted with an intruder, mutant mice attacked the intruder faster and more intensely than did wild-type mice, suggesting the participation of 5-HT1B receptors in aggressive behavior.

Science 23 September 1994:
Vol. 265. no. 5180, pp. 1875 - 1878
DOI: 10.1126/science.8091214

F Saudou, DA Amara, A Dierich, M LeMeur, S Ramboz, L Segu, MC Buhot, and R Hen
http://www.sciencemag.org/cgi/content/abstract/265/5180/1875

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Comment by Omega on December 10, 2009 at 12:19pm
I wonder if the military has their hands on this yet.
Comment by Metaluna Mutant on July 1, 2008 at 7:32am
I suffer from from schizoaffective disorder and clinical depression, so I know what your talking about. There have been cases where I have violently attacked people if outside forces permit. I have as yet to be punished for my actions, be it by law enforcement or school officials.

Sorry to sound Hulk-ish; but when I lose control, It feels good. I never feel so alive as when I am subjecting a tormentor to a brutal beating. I have always been a nerd but with one difference; I scare people by my mere presence. Except for those of a lower being, those that don't know of my history or are too stupid to care. I was, and always will be a bully magnet. I am a master at turning the tables. If the harassment goes too far; you better watch your ass boy, cause I'm coming for you!

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