Dr. Stephen Porges developed the Polyvagal Theory, which emphasizes the vagus nerve's role in emotional regulation, social connection, and fear response, crucially affecting how trauma impacts the nervous system and behavior. Central to this theory is neuroception, the body's ability to detect safety and danger without conscious awareness, influencing physiological states and interactions. Porges advocates for creating safe environments and employing body-centered therapies like deep breathing and mindfulness to help trauma survivors regulate their nervous systems and heal.