G-transition effects and their implications

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 cardiovascular and spatial orientation sy...

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Bibliographic Details
Published in:	Aviation, space, and environmental medicine Vol. 72; no. 8; p. 758
Main Authors:	Cheung, B, Bateman, W A
Format:	Journal Article
Language:	English
Published:	United States 01-08-2001
Subjects:	Aerospace Medicine Confusion - etiology Coriolis Force Humans Hypergravity - adverse effects Hypogravity - adverse effects Space Flight Weightlessness - adverse effects
Online Access:	Get more information
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Summary:	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 cardiovascular and spatial orientation systems. This note attempts to briefly review past and current research efforts on the consequences 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.
ISSN:	0095-6562