@article{ref1,
title="Performance of a simple aiming task in hypergravity: II. detailed response characteristics",
journal="Aviation, space, and environmental medicine",
year="1996",
author="Bock, Otmar and Arnold, K. E. and Cheung, B. S.",
volume="67",
number="2",
pages="133-138",
abstract="BACKGROUND: Literature proposes three hypotheses for impaired movement execution in hyper-G. The present study attempted to discriminate between these hypotheses by comparing kinematic characteristics and final accuracy of pointing movements in different gravity levels. METHOD: Subjects pointed without seeing their hand at targets presented before, during and after exposure to hyper-G. RESULTS: After factoring out movement amplitude, peak vertical velocity and the skewness of velocity profiles tended to increase, while movement duration tended to decrease with increasing G-level. Further, final response position was slightly less modulated by target position in hyper-G than in normal-G. CONCLUSION: Although not all findings reached statistical significance, the observed pattern of results corroborates the hypothesis (2) that the motor system re-interprets hyper-G as increased arm weight.<p /><p>Language: en</p>",
language="en",
issn="0095-6562",
doi="",
url="http://dx.doi.org/"
}