Researchers have uncovered a link between the immune gene regulator STAT1 and hyperactive behaviors in mice, offering new insights into neurodevelopmental disorders like autism and ADHD. STAT1, vital for infection response, also influences brain cell activity, particularly dopamine neurons involved in motivation and learning. In mice with prolonged STAT1 signaling, hyperactivity and reduced neural activity in key brain regions were observed. The study opens the door to targeting STAT1 for potential therapies to address neurobehavioral disorders.