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Scientists map roots of premeditated, violent 'intent' in animal brain

The bad intentions that often precede violence originate in a specific brain region, according to a study in mice. The work is the first, say the study authors, to tie warning signs of premeditated violence -- stalking, bullying, and possibly sexual aggression -- to a distinct part of the hypothalamus, the brain region that also controls body temperature, hunger and sleep in mammals.
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