Our nervous system is three-fold (Rudolf Steiner meets Polyvagal)
When Rudolf Steiner meets Polyvagal we get a 3D hologram nervous system

Given the 2020 book Polyvaglal Exercises… by Deb Dana, colleague of Stephen Porges; and, a 2014 report of a meeting between Susan Johnson and Michaela Glockler, I think now possible to put all the pieces together.
Susan’s full text…