Psychology- Brain areas associated with aggression

The Midbrain: Contains an area called the periaqueductal grey matter (PAG) which links the amygdala and hypothalamus with the prefrontal cortex. It coordinates and integrates behavioural responses to perceived stressors such as a threat. 

The Amygdala: The centre for emotions and motivation. It integrates internal and external stimuli from every sense which when combined gives instinctive feelings/reactions to the environment which will include aggression. The amygdala takes information from the thalamus and interprets it as a threat or not; it produces fear or aggression, the famous "fight or flight" response. If the amygdala malfunctions, things which are threatening will not produce a fear response - or else harmless events will be interpreted as a threat, producing aggression.

The Prefrontal Cortex: Influential in governing social interaction and regulation of behaviour. It…