Effect of a Stereoscopic Movie on the Correlation between Head Acceleration and Body Sway

Visually induced motion sickness (VIMS) is caused by sensory conflict, the disagreement between vergence and visual accommodation while observing stereoscopic images. VIMS can be measured by psychological and physiological methods. We quantitatively measured the head acceleration and body sway before and during exposure to a conventional 3D movie. The subjects wore a head mount display and maintained the Romberg posture for the first 60 s and a wide stance (midlines of the heels 20 cm apart) for the next 60 s. Head acceleration was measured using an Active Tracer with 50 Hz sampling. The Simulator Sickness Questioner (SSQ) was completed immediately afterward. For the SSQ sub-scores and each index for stabilograms, we employed two-way ANOVA with leg postures and presence/absence of stereoscopic images as factors. Moreover, we assumed that the input signal was the head acceleration in the transfer system to control the body sway and estimate the transfer function.

[1]  Robert S. Kennedy,et al.  Simulator Sickness Questionnaire: An enhanced method for quantifying simulator sickness. , 1993 .

[2]  Tomoki Watanabe,et al.  A method for evaluating motion sickness induced by watching stereoscopic images on a head-mounted display , 2009, Electronic Imaging.

[3]  Takashi Tokita,et al.  Stabilometry-Significance of Locus Length Per Unit Area (L/A)- , 1995 .

[4]  Michael W. Haas,et al.  Postural Instability and Motion Sickness in a Fixed-Base Flight Simulator , 2000, Hum. Factors.

[5]  Hiroki Takada,et al.  Physical Meaning on Geometrical Index for Stabilometry , 2003 .

[6]  Yoichi Yokota,et al.  Motion sickness susceptibility associated with visually induced postural instability and cardiac autonomic responses in healthy subjects , 2005, Acta oto-laryngologica.

[7]  行雄 渡辺,et al.  重心動揺のQ＆A,手引き(1995) , 1996 .

[8]  Hideki Kakeya.  MOEVision: simple multiview display with clear floating image , 2007, Electronic Imaging.

[9]  Rs Kennedy,et al.  A simulator sickness questionnaire (SSQ) : A new method for quantifying simulator sickness , 1993 .

[10]  K Taguchi,et al.  Relationship between head sway and center of foot pressure sway. , 1995, Auris, nasus, larynx.

[11]  Hideki Kakeya,et al.  Combining volumetric edge display and multiview display for expression of natural 3D images , 2006, Electronic Imaging.

[12]  氷見 直之,et al.  Differences in autonomic responses between subjects with and without nausea while watching an irregularly oscillating video , 2005 .

[13]  J T Reason,et al.  Motion Sickness Adaptation: A Neural Mismatch Model 1 , 1978, Journal of the Royal Society of Medicine.

[14]  Takashi Tokita,et al.  Stabilometry-Significance of Locus Length per Unit Area(L/A) in Patients with Equilibrium Disturbances- , 1996 .

[15]  Randy J. Pagulayan,et al.  Postural stabilization of looking. , 1999 .

[16]  T. Stoffregen,et al.  An ecological Theory of Motion Sickness and Postural Instability , 1991 .

[17]  B. Day,et al.  Human body‐segment tilts induced by galvanic stimulation: a vestibularly driven balance protection mechanism. , 1997, The Journal of physiology.

[18]  Lm Scibora,et al.  Wider stance reduces body sway and motion sickness , 2007 .

[19]  C. Oman.  A heuristic mathematical model for the dynamics of sensory conflict and motion sickness. , 1982, Acta oto-laryngologica. Supplementum.

[20]  Michael J. Griffin,et al.  Correlation Between Heart Rate and the Severity of Motion Sickness Caused by Optokinetic Stimulation , 2001 .