Assertion: serial killer's brain | /r/CapableOf | call the amygdala
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text: And as with a drug addiction, withdrawal from killing may cause a buildup of hormones in a part of the brain called the amygdala, "and this very, very unpleasant feeling can only be reversed by acting out whatever the addicting stimulus might be," Fallon told Life's Little Mysteries, a sister site to LiveScience.