This trial tests if inhaling nitrous oxide can help normalize brain function in people with impulsive aggression. Participants with and without aggressive tendencies will inhale the gas and undergo brain scans to see if it improves their brain activity. The goal is to find a potential treatment for those with Intermittent Explosive Disorder. Nitrous oxide has been shown to reduce involuntary movements in cerebral palsy patients, indicating its potential to affect brain function.