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ISSN : 1226-9654

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Vol.24 No.3

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Effect of an Independent Visual Foreground on Cybersickness in Virtual Environment

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2012, v.24 no.3, pp.251-263
https://doi.org/10.22172/cogbio.2012.24.3.003







& (2012). Effect of an Independent Visual Foreground on Cybersickness in Virtual Environment. The Korean Journal of Cognitive and Biological Psychology, 24(3), 251-263, https://doi.org/10.22172/cogbio.2012.24.3.003

Abstract

Cybersickness accompanies a variety of autonomic symptoms that parallel symptoms of motion sickness. The underlying physiological mechanisms of cybersickness have been controversial and foolproof methods for elimination of cybersickness have not been introduced. This study investigated effects of an independent visual foreground (IVF) which could assist users in selecting a single rest frame in virtual environment (VE) to reduce cybersickness. Twenty-two subjects experienced a VE both with the IVF (IVF condition) and without the IVF (No-IVF condition) with counterbalancing for contol of order effects at an interval of two weeks. Subjective indices of cybersickness were obtained from self-reports and a simulator sickness questionnaire (SSQ). Physiological indices of cybersickness were obtained from the frequency spectrum of electrogastrogram(EGG). A presence questionnaire (PQ) was used to compare the feeling of presence in each condition. The main findings were that the residual percent of normal frequency of EGG was maintained significantly higher level and the residual percent of tachygastria frequency of EGG was maintained significantly lower level in the IVF condition than those in the No-IVF condition. There was a significant correlation between SSQ scores and frequency spectrum of EGG. However, there was no significant difference in PQ scores between IVF and No-IVF conditions, which showed that IVF did not deteriorate the feeling of presence in the VE.. These results suggest that presentation of IVF in VE reduce autonomic symptoms of cybersickness and EGG can be an objective measure of cybersickness. We suggest that use of IVF can be a promising approach to alleviate cybersickness in VE.

keywords
가상환경, 사이버멀미, 독립적 시각 전경, 정지좌표계, 위장전위, virtual environment, cybersickness, independent visual foreground, rest frame, electrogastrogram

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