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Title: Frequency characteristics of visually induced motion sickness
Authors: Diels, Cyriel
Howarth, Peter A.
Keywords: Simulator sickness
Frequency
Fore-and-aft motion
Stimulus parameters
Issue Date: 2013
Publisher: Sage Publications / © Human Factors and Ergonomics Society.
Citation: DIELS, C. and HOWARTH, P.A., 2013. Frequency characteristics of visually induced motion sickness. Human Factors, 55 (3), pp. 595 - 604.
Abstract: Objective: The aim of this study was to explore the frequency response of visually induced motion sickness (VIMS) for oscillating linear motion in the foreand- aft axis. Background: Simulators, virtual environments, and commercially available video games that create an illusion of self-motion are often reported to induce the symptoms seen in response to true motion. Often this human response can be the limiting factor in the acceptability and usability of such systems. Whereas motion sickness in physically moving environments is known to peak at an oscillation frequency around 0.2 Hz, it has recently been suggested that VIMS peaks at around 0.06 Hz following the proposal that the summed response of the visual and vestibular selfmotion systems is maximized at this frequency. Methods: We exposed 24 participants to random dot optical flow patterns simulating oscillating foreand- aft motion within the frequency range of 0.025 to 1.6 Hz. Before and after each 20-min exposure, VIMS was assessed with the Simulator Sickness Questionnaire. Also, a standard motion sickness scale was used to rate symptoms at 1-min intervals during each trial. Results: VIMS peaked between 0.2 and 0.4 Hz with a reducing effect at lower and higher frequencies. Conclusion: The numerical prediction of the “crossover frequency” hypothesis, and the design guidance curve previously proposed, cannot be accepted when the symptoms are purely visually induced. Application: In conditions in which stationary observers are exposed to optical flow that simulates oscillating fore-and-aft motion, frequencies around 0.2 to 0.4 Hz should be avoided.
Description: This article was published in the journal, Human Factors [Sage Publications / © Human Factors and Ergonomics Society.]. The definitive version is available at: http://dx.doi.org/10.1177/0018720812469046
Version: Submitted for publication
DOI: 10.1177/0018720812469046
URI: https://dspace.lboro.ac.uk/2134/14872
Publisher Link: http://dx.doi.org/10.1177/0018720812469046
ISSN: 0018-7208
Appears in Collections:Published Articles (Design School)

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