Chapter

Virtual and Mixed Reality

Volume 5622 of the series Lecture Notes in Computer Science pp 254-262

On a Qualitative Method to Evaluate Motion Sickness Induced by Stereoscopic Images on Liquid Crystal Displays

  • Hiroki TakadaAffiliated withLancaster UniversityGifu University of Medical Science
  • , Kazuhiro FujikakeAffiliated withLancaster UniversityInstitute for Science of Labour
  • , Masaru MiyaoAffiliated withLancaster UniversityNagoya University

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Abstract

Visually induced motion sickness (VIMS) is known to be caused by sensory conflict, which is the disagreement between vergence and visual accommodation while observing stereoscopic images. The simulator sickness questionnaire (SSQ) is a well-known method that is used herein for verifying the occurrence of VIMS. We quantitatively measure the sway of the centre of gravity of the human body before and during exposure to several images. During the measurement, subjects are instructed to maintain the Romberg posture for the first 60 s and a wide stance (midlines of the heels 20 cm apart) for the next 60 s. The stereoscopic images decrease the gradient of the potential function involved in the stochastic differential equations as a mathematical model of the body sway. We have succeeded in estimating the decrease in the gradient by using an index called sparse density.

Keywords

stabilometry Simulator Sickness Questionnair sparse density stochastic differential equation potential