The perfect companion to Vagus Nerve Oil. This practical guide to understanding the cranial nerves as the key to our psychological and physical well-being builds on Stephen Porges’s Polyvagal Theory—one of the most important recent developments in human neurobiology. Drawing on more than thirty years of experience as a craniosacral therapist and Rolfer, Stanley Rosenberg explores the crucial role that the vagus nerve plays in determining our psychological and emotional states and explains that a myriad of common psychological and physical symptoms—from anxiety and depression to migraines and back pain—indicates a lack of proper functioning in the vagus nerve.