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Issue title: Aerospace Medical and Human Factors Challenges, Cambridge, MA, USA, March 5, 2009
Article type: Research Article
Authors: Harris, Laurence R.; * | Jenkin, Michael | Jenkin, Heather | Dyde, Richard | Zacher, Jim | Allison, Robert S.
Affiliations: Centre for Vision Research, York University, Toronto, Canada
Correspondence: [*] Corresponding author: Laurence Harris, Department Psychology, York University, Toronto, ON, M3J 1P3 Canada. Tel.: +1 416 736 2100 x 66108; E-mail: harris@yorku.ca
Abstract: Chuck Oman has been a guide and mentor for research in human perception and performance during space exploration for over 25 years. His research has provided a solid foundation for our understanding of how humans cope with the challenges and ambiguities of sensation and perception in space. In many of the environments associated with work in space the human visual system must operate with unusual combinations of visual and other perceptual cues. On Earth physical acceleration cues are normally available to assist the visual system in interpreting static and dynamic visual features. Here we consider two cases where the visual system is not assisted by such cues. Our first experiment examines perceptual stability when the normally available physical cues to linear acceleration are absent. Our second experiment examines perceived orientation when there is no assistance from the physically sensed direction of gravity. In both cases the effectiveness of vision is paradoxically reduced in the absence of physical acceleration cues. The reluctance to rely heavily on vision represents an important human factors challenge to efficient performance in the space environment.
DOI: 10.3233/VES-2010-0352
Journal: Journal of Vestibular Research, vol. 20, no. 1-2, pp. 25-30, 2010
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