In the central nervous system, the subarachnoid space is the interval between the arachnoid membrane and the pia mater. It is filled with a clear, watery liquid called cerebrospinal fluid (CSF). The CSF buffers the brain against mechanical shocks and creates buoyancy to protect it from the forces of gravity. The relative motion of the brain due to a simultaneous loading is caused because the skull and brain have different densities and the CSF surrounds the brain. The impact experiments are usually carried out on cadavers with no CSF included because of the autolysis. Even in the cadaveric head impact experiments by Hardy et al. [1], where the specimens are repressurized using artificial CSF, this is not known how far this can replicate the real functionality of CSF. With such motivation, a special interest lies on how to model this feature in a finite element (FE) modeling of the human head because it is questionable if one uses in vivo CSF properties (i.e. bulk modulus of 2.19 GPa) to validate a FE human head against cadaveric experimental data.
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ASME 2009 Summer Bioengineering Conference
June 17–21, 2009
Lake Tahoe, California, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
978-0-7918-4891-3
PROCEEDINGS PAPER
Effects of CSF Properties on Brain Response Under Impact Loading
M. S. Chafi,
M. S. Chafi
North Dakota State University, Fargo, ND
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V. Dirisala,
V. Dirisala
North Dakota State University, Fargo, ND
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G. Karami,
G. Karami
North Dakota State University, Fargo, ND
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M. Ziejewski
M. Ziejewski
North Dakota State University, Fargo, ND
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M. S. Chafi
North Dakota State University, Fargo, ND
V. Dirisala
North Dakota State University, Fargo, ND
G. Karami
North Dakota State University, Fargo, ND
M. Ziejewski
North Dakota State University, Fargo, ND
Paper No:
SBC2009-206624, pp. 713-714; 2 pages
Published Online:
July 19, 2013
Citation
Chafi, MS, Dirisala, V, Karami, G, & Ziejewski, M. "Effects of CSF Properties on Brain Response Under Impact Loading." Proceedings of the ASME 2009 Summer Bioengineering Conference. ASME 2009 Summer Bioengineering Conference, Parts A and B. Lake Tahoe, California, USA. June 17–21, 2009. pp. 713-714. ASME. https://doi.org/10.1115/SBC2009-206624
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