It is our purpose to determine which of the elastic components of the craniovertebral system of man is responsible for the lumbar cerebrospinal fluid pressure when the subject is in the sitting position.
THE CRANIOVERTEBRAL SYSTEM
The craniovertebral system of man (fig. 1) is composed of the bony and ligamentous elements of the cranial and vertebral cavities, together with the brain and spinal cord, the cerebrospinal fluid, the meninges and the vascular tree enclosed within these cavities. This system therefore contains certain elements capable of changes of volume and pressure. The outer envelop of the system is obviously not rigid, for alterations in pressure may be transmitted to the cerebrospinal fluid via the systemic veins during respiration and during abdominal or jugular compression. Furthermore, on change from the recumbent to the erect position with the head up or down, added volumes of cerebrospinal fluid are displaced from the system into
VON STORCH TJC, CARMICHAEL EA, BANKS TE. FACTORS PRODUCING LUMBAR CEREBROSPINAL FLUID PRESSURE IN MAN IN THE ERECT POSTURE. Arch NeurPsych. 1937;38(6):1158-1175. doi:10.1001/archneurpsyc.1937.02260240038003