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http://dx.doi.org/10.5143/JESK.2005.24.1.001

Relationship between Scene Movements and Cybersickness  

Park, Kyung-Soo (KAIST 산업공학과)
Choi, Jeong-A (KAIST 산업공학과)
Kim, Kyoung-Taek (KAIST 산업공학과)
Kim, Sang-Soo (KAIST 산업공학과)
Publication Information
Journal of the Ergonomics Society of Korea / v.24, no.1, 2005 , pp. 1-7 More about this Journal
Abstract
This paper investigates the effects of scene movements on cybersickness to develop the guidelines of scene movements in virtual environments. The types of scene movements were made for both scene navigations(through the axes of X: lateral, Y: fore & after, and Z: vertical) and scene rotations(by pitch, roll and yaw). And there were each three levels of speed; 2.7, 4.5 and 6.3 /s(for navigation), and 10, 20 and 30 /s(for rotation) were conducted. Twelve participants were exposed to each scene for 15 minutes, and three tests were performed to measure the degree of sickness. Before and after subjects were exposed to virtual environments, they were requested to describe their sickness symptoms by means of answering the Simulator Sickness Questionnaire(SSQ). And the postural stability tests, in which the Center of Pressure(COP) of subjects were traced and recorded by a 'force platform', were conducted. During the exposure on virtual environments, the subjects were requested to rate the degree of nausea. For both navigation and rotation, the effects of speeds and axes were significant in the SSQ scores and the nausea ratings, while it was not in the COP. The correlation between the SSQ scores and the COP data was not found. Therefore, it was inappropriate to use COP as a measure of cybersickness. The degree of sickness increased, except for the case of the yaw, as the speed increased. The sickness was most severe in the scene navigation through the axis X and in the scene rotation by the yaw.
Keywords
Cybersickness; Scene movement; COP; Simulator sickness questionnaire;
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