"Although there was an overall dampening effect of alcohol on the prefrontal cortex, even at a low dose of alcohol we observed a significant positive relationship between dorsomedial and dorsolateral prefrontal cortex activity and alcohol-related aggression," lead author Thomas Denson, from the University of New South Wales in Australia, said in a statement. "These regions may support different behaviors, such as peace versus aggression, depending on whether a person is sober or intoxicated.