Polyvagal theory emphasizes the role the autonomic nervous system — especially the vagus nerve — plays in regulating health and behavior. Created and developed by Dr. Stephen Porges, the theory describes the physiological and psychological states underlying mental health challenges and everyday behavior. With his son, director and producer Seth Porges, Dr. Porges co-wrote Our Polyvagal World: How Safety and Trauma Change Us, the latest book in an expansive bibliography exploring polyvagal theory. They sat down with two of McSilver's visionary researchers, Dr. Kara Dean-Assael and Dr. Anthony Salerno, to discuss potential impacts of polyvagal theory for health practitioners, systems of care, and society in general.