Book excerpt: Classically, manipulations of the cranium address the sutures, the membranes and the circulation of cerebral spinal fluid. The proper functioning of these elements requires not only the mechanical harmony of the craniosacral system, but relies also on the exchange of information organized around proprioceptors, baroreceptors and chemoreceptors. These receptors are extremely sensitive. It is the nervous system -cranial nerves and the autonomic nervous system - which transports this intelligence. Neural dysfunctions have, therefore the ability to disturb the fundamental components of the primary respiratory mechanism. Entirely new, original and abundantly illustrated, this book is an essential guide with which to visualize and become familiar with the cranial nerves. It will teach the practitioner manipulations of this delicate neural system as well as new techniques which permit one to have an effect on the most precious part of the cranium: the brain.