The book is called Craniosacral Biodynamics: The Primal Midline and the Organization of the Body by Franklyn Sills. I haven't read it, but am familiar with information from my own researching. The link has a sample of the book, and this I have read. The book is volume one of a series. The sample is actually quite extensive, and will speak to the reader far more than anything I can say, except that this book is scientific, yet relatively simply written and practical. If anyone is interested to place the dynamics of spiritual transformation involving the spinal axis of the human body in 21st century terms, this book is a good start.