G-transition effects and their implications

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Authors
  1. Cheung, B.
  2. Bateman, W.A.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
G-transition effects are defined as the spectrum of physiological and psychophysical effects induced by rapid changes in gravitoinertial forces, alternating between hypogravity (<1 Gz) and hypergravity (>1 Gz) and vice versa. They appear to involve the cadriovascular and spatial orientation systems. This note attempts to briefly review past and current research effects on the consequence of G-transitions and to examine potential confounding Coriolis-induced bias in both ground-based and inflight research. A brief review of current evidence of vestibular influence on orthostatic compensation and their implications for G tolerance is presented. The effects of roll-induced hypogravity on subsequent G tolerance and possible misperception of attitude during roll rotation are discussed. An integrated approach is recommended for future research on acceleration and disorientation.
Keywords
GTE (G-transition effect);Hypergravity;Hypogravity;Spatial disorientation
Report Number
DCIEM-SL-1999-099 — Scientific Literature
Date of publication
30 Aug 2001
Number of Pages
8
Reprinted from
Aviation, Space, and Environmental Medicine, vol 72, no 8, 2001, p 758-762
DSTKIM No
CA020126
CANDIS No
516789
Format(s):
Hardcopy;Document Image stored on Optical Disk

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