Journal article
Contribution of cerebrospinal fluid to rheoencephalographic waveforms during hypoxic and +Gz stress
Aviation, space, and environmental medicine, v 65(6), pp 510-517
01 Jun 1994
PMID: 8074623
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
It has been acknowledged long since that understanding of the role of the cerebrospinal fluid (CSF) system is essential in order to enhance G-tolerance, but the lack of a suitable noninvasive CSF monitoring technique has prevented such studies. This paper presents a rheoencephalography (REG) method for noninvasive monitoring of CSF shifts under both hypoxic and actual +Gz (centrifuge) stress conditions. Using REG technique on rabbits, it was found that REG waveforms obtained on rabbits under laboratory or +Gz conditions are similar to those obtained during human +Gz centrifuge exposures; that REG contains information concerning the function of the vascular, CSF, and respiratory systems as they influence both beat-to-beat and bulk movement of cephalic fluids; and that respiratory effects on cerebral blood volume and CSF pressure can be monitored with the REG. Using brief occlusion of blood flow into the head and withdrawals of CFS, it was established that the relative volumetric contributions of blood and CSF to the REG were 70 and 30 percent, respectively. The physiologic responses to +Gz stress were reflected in changes in the frequency content of the REG. (AIAA)
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Details
- Title
- Contribution of cerebrospinal fluid to rheoencephalographic waveforms during hypoxic and +Gz stress
- Creators
- Barry ShenderStephen Dubin
- Publication Details
- Aviation, space, and environmental medicine, v 65(6), pp 510-517
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- [Retired Faculty]
- Web of Science ID
- WOS:A1994NN77100002
- Scopus ID
- 2-s2.0-0028199052
- Other Identifier
- 991019184100004721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Public, Environmental & Occupational Health
- Sport Sciences