This is a cool, though too brief, video from Berkeley psychology professor Dacher Keltner, who is also the faculty director of of The Greater Good Science Center, on the Secrets of the Vagus Nerve. This is a clip from a longer talk available only to members.
July 2012 | TRT 6:17
The UC Berkeley psychologist and Faculty Director of the Greater Good Science Center shares his research on the vagus nerve, a key nexus of mind and body, and a biological building block of human compassion.
Watch the full talk (Members only)
Stephen Porges has done extensive research on the role of the vagus nerve in trauma and PTSD - his model is known as polyvagal theory.