Response of the Cardiovascular System to Vibration and Combined Stresses

Cardiovascular regulation of acceleration-induced pressure and flow disturbances entails a complex pattern of afferent and efferent neural activity. The global nature of the stress in the levels applied invokes a response from both low and high pressure sensory areas as well as possible mechano-vest...

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Bibliographic Details
Main Author: Knapp, Charles F
Format: Report
Language:English
Subjects:
ACCELERATION TOLERANCE
AORTA
ARTERIES
CARDIOVASCULAR SYSTEM
DOGS
HEART RATE
NERVOUS SYSTEM
PE61102F
PHYSIOLOGICAL EFFECTS
Stress Physiology
VIBRATION
WUAFOSR2312A2
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Summary:Cardiovascular regulation of acceleration-induced pressure and flow disturbances entails a complex pattern of afferent and efferent neural activity. The global nature of the stress in the levels applied invokes a response from both low and high pressure sensory areas as well as possible mechano-vestibular mechanisms. In this light, it was felt that the dual activation of both peripheral and cardiac efferent activity in response to acceleration stress would disguise the contribution from either mechanisms separately and for that reason a preparation was sought which would allow for delineation of these reactions. As a result, a canine chronic preparation that included a surgically denervated heart thereby permitting a detailed analysis of the peripheral vascular contribution to barostatic regulation has been developed.