Accession Number : AD0710986

Title :   PHYSIOLOGIC RESPONSES TO SHORT DURATION Gz.

Descriptive Note : Final rept.,

Corporate Author : NAVAL AIR DEVELOPMENT CENTER JOHNSVILLE PA AEROSPACE MEDICAL RESEARCH DEPT

Personal Author(s) : Kydd,George H. ; Ashley,Archie

Report Date : 14 AUG 1970

Pagination or Media Count : 40

Abstract : Subjects were subjected to Gz (positive) haversine accelerations of short duration, high magnitude on the centrifuge and their responses to peripheral lights have been recorded. Whereas, most subjects lost the peripheral lights during the 6-second haversine, only one did so during the 4-second run. Since the acceleration is maximum one half way through these accelerations this means that a rise time to 6 Gz in 3 seconds was more effective in producing peripheral light loss (P.L.L.) than a rise to 10 Gz in 2 seconds. The data thus indicate that the response tends to become independent of maximum Gz and become more a function of the duration of the acceleration. With the shorter duration haversine (10 and 8 seconds) the response tends to occur after maximum Gz when acceleration is decreasing. (Author)

Descriptors :   (*ACCELERATION TOLERANCE, PHYSIOLOGY), RESPONSE(BIOLOGY), STRESS(PHYSIOLOGY), ACCELERATION, GRAVITY

Subject Categories : Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE