Goodheart GJ, Schmitt WH, Cranial Technique: A Clarification of Certain Principles Dig Chiro Econ, Nov/Dec 1977; 20(3): 26-29,74.

Normal cranial bone movement with respiration is reviewed. The frontal bone halves rotate internally at the metopic suture on inspiration and externally on expiration. The temporal bone and innominate bones have similar but not identical respiratory movements. The mastoid process moves posteriorily and medially on inspiration, the opposite on expiration. Correction of “inspiration – and expiration – assisted” cranial faults is therefore based on exaggeration of the fault and “rebound” response of the dura mater.