The amygdala is a brain region responsible for regulating our perceptions of, and reactions to, aggression and fear. The prefrontal cortex is in effect a control center for aggression: when it is more highly activated, we are more able to control our aggressive impulses.Click to see full answer. Just so, what causes aggressive behavior in the brain?The brain chemical serotonin has long been known to play an important role in regulating anger and aggression. Furthermore, research now suggests that unchecked aggressive behavior can eventually change the brain in ways that cause serotonin activity to decrease-and, perhaps, violent behavior to increase.Also, what causes human aggression? Physical Factors: Epilepsy, dementia, psychosis, alcohol abuse, drug use, and brain injuries or abnormalities can also influence aggression. Likewise, people ask, what happens in brain during anger? As you become angry your body’s muscles tense up. Inside your brain, neurotransmitter chemicals known as catecholamines are released causing you to experience a burst of energy lasting up to several minutes. This burst of energy is behind the common angry desire to take immediate protective action.How is the amygdala linked to aggression?The amygdala has been shown to be an area that causes aggression. Stimulation of the amygdala results in augmented aggressive behavior, while lesions of this area greatly reduce one’s competitive drive and aggression. Another area, the hypothalamus, is believed to serve a regulatory role in aggression.