Postural Stability and Stereo-Ambiguity in Man-Designed Visual Environments

David J. Lasley, Russell D. Hamer, Robert Dister and Theodore E. Cohn

University of California Transportation Center, Working Papers from University of California Transportation Center

Abstract: Our modern rectilinear visual environment contains visual stimuli for which evolution has not had time to optimally shape visual processing. One such stimulus, periodic stripes, is known to lead to visual depth ambiguity. In this paper we show that postural instability, as measured by the variance of fore and aft sway, is increased by viewing such stimuli. This instability may be the precursor of falls. Designers must evaluate the visual impressions conveyed by their systems in order to avoid postural instability due to visual ambiguity.

Keywords: Social; and; Behavioral; Sciences (search for similar items in EconPapers)
Date: 1991-01-01
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