In article <3jse95$fmn at xdm084.ccc.cranfield.ac.uk>, ea932783 at xdm012.ccc.cranfield.ac.uk (A.R.LAWSON) writes:
|> Hello,
|> I was wandering whether anyone could help me. I am looking at the
|> dynamic motion of the brain during applied rotation/translation of the skull.
|> The question I have is with regards the cerebrospinal fluids (CSF) effect on
|> the dynamic motion of the brain.
|> The CSF has more than a protective role to play but to what degree does it
|> effect the brains motion. It is obvious that the CSF will damp the brains
|> motion and this will be governed by how easily the CSf can flow out of Brain/|> (Skull and Membrane) contact regions. Can anyone help?
I can't offer any leads to information on this subject, but I do seem to
remember having heard that racing drivers suffer a sort of very short black-out
of vision in tight turns, apparently because the brain is pressed against
the skull by the centifugal force. In theory it sounds possible. In traumatology
we often see contusions in areas such as the tip of the frontal or temporal lobe
caused by impaction on surrounding bone, but I have no idea if this has been
studied in detail.
There is no physical communication between CSF and the rest of the body, and
the brain and spinal cord are encased in an inextensible envelope, so a change
of volume of CSF is not possible. The brain is not fixed inside the skull,
but is surrounded by structures both loose (pia and blood vessels) and rigid
(falx) that will retard movement.
Philippe
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