The document summarizes research on the effects of violent video games on the brain and behavior. Studies found that teenagers who played violent video games like Medal of Honor showed increased activity in brain regions related to emotion and memory, while those who played the non-violent game Need for Speed did not. However, the document notes that increased emotional arousal does not necessarily mean teenagers will commit violent acts. While some research links violent games to aggression, other studies have been inconclusive. The document also discusses several common myths about video games and presents the results of a survey on whether violent games influence criminal behavior.