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Investigations Into the Movements of the Cerebrospinal Fluid 

Investigations Into the Movements of the Cerebrospinal Fluid
Investigations Into the Movements of the Cerebrospinal Fluid

Marcus E. Raichle

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date: 12 June 2021

This chapter is based on investigations about the movements of the cerebrospinal fluid. Cerebrospinal fluid pressure decreases during inspiration and increases during expiration. The author addresses the question of whether there is a flow of fluid between the brain and the spinal cord. The author experiments on dogs to test for flow of cerebrospinal fluid between the brain and spinal cord and concludes that it does not occur. The author experiments on a six-month-old infant girl with spina bifida, involving a tumor in the lumbar region with a thin membrane over the spinal canal. Observations and measurements were carried out to test for pulsatile movements reflecting cerebrospinal fluid flow within the spinal canal. Supporting the results in the dog, no pulsatile movements were found. Observations were also made of cerebral pulsations as evidenced in the fontanels of this infant.

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