The Effect on Lower Spine Muscle Activation of Walking on a Narrow Beam in Virtual Reality

To what extent do people behave in immersive virtual environments as they would in similar situations in a physical environment? There are many ways to address this question, ranging from questionnaires, behavioral studies, and the use of physiological measures. Here, we compare the onsets of muscle activity using surface electromyography (EMG) while participants were walking under three different conditions: on a normal floor surface, on a narrow ribbon along the floor, and on a narrow platform raised off the floor. The same situation was rendered in an immersive virtual environment (IVE) Cave-like system, and 12 participants did the three types of walking in a counter-balanced within-groups design. The mean number of EMG activity onsets per unit time followed the same pattern in the virtual environment as in the physical environment-significantly higher for walking on the platform compared to walking on the floor. Even though participants knew that they were in fact really walking at floor level in the virtual environment condition, the visual illusion of walking on a raised platform was sufficient to influence their behavior in a measurable way. This opens up the door for this technique to be used in gait and posture related scenarios including rehabilitation.

[1]  Woodrow Barfield,et al.  Measuring Presence in Virtual Environments: A Presence Questionnaire , 1998, Presence.

[2]  Chris Barker,et al.  An Experiment on Public Speaking Anxiety in Response to Three Different Types of Virtual Audience , 2002, Presence: Teleoperators & Virtual Environments.

[3]  M. Whitton,et al.  Effect of latency on presence in stressful virtual environments , 2003, IEEE Virtual Reality, 2003. Proceedings..

[4]  W. Marsden.  I and J , 2012 .

[5]  David B. Kaber,et al.  Telepresence , 1998, Hum. Factors.

[6]  Thomas B. Sheridan.  Further Musings on the Psychophysics of Presence , 1996, Presence: Teleoperators & Virtual Environments.

[7]  G. Manecke,et al.  Editorial: Robotics and telepresence--the future is arriving ahead of schedule. , 2007, Journal of cardiothoracic and vascular anesthesia.

[8]  Maria V. Sanchez-Vives,et al.  From presence to consciousness through virtual reality , 2005, Nature Reviews Neuroscience.

[9]  Mel Slater,et al.  Visual Realism Enhances Realistic Response in an Immersive Virtual Environment , 2009, IEEE Computer Graphics and Applications.

[10]  Anil K. Bera,et al.  Efficient tests for normality, homoscedasticity and serial independence of regression residuals: Monte Carlo Evidence , 1981 .

[11]  Mel Slater,et al.  Place illusion and plausibility can lead to realistic behaviour in immersive virtual environments , 2009, Philosophical Transactions of the Royal Society B: Biological Sciences.

[12]  Konrad Paul Kording,et al.  Bayesian integration in sensorimotor learning , 2004, Nature.

[13]  Heidi Sveistrup,et al.  Motor rehabilitation using virtual reality , 2004, Journal of NeuroEngineering and Rehabilitation.

[14]  Maria V. Sanchez-Vives,et al.  A Virtual Reprise of the Stanley Milgram Obedience Experiments , 2006, PloS one.

[15]  Carlo J. De Luca,et al.  The Use of Surface Electromyography in Biomechanics , 1997 .

[16]  John C. Hart,et al.  The CAVE: audio visual experience automatic virtual environment , 1992, CACM.

[17]  Maureen K. Holden,et al.  Virtual Environments for Motor Rehabilitation: Review , 2005, Cyberpsychology Behav. Soc. Netw..

[18]  Sylvia Weir,et al.  Action perception , 1974 .

[19]  Bruno Arnaldi,et al.  Real Handball Goalkeeper vs. Virtual Handball Thrower , 2003, Presence: Teleoperators & Virtual Environments.

[20]  Michael Meehan,et al.  Physiological measures of presence in stressful virtual environments , 2002, SIGGRAPH.

[21]  Mary C. Whitton,et al.  Walking > walking-in-place > flying, in virtual environments , 1999, SIGGRAPH.

[22]  Mel Slater,et al.  An Analysis of Eye Scanpath Entropy in a Progressively Forming Virtual Environment , 2009, PRESENCE: Teleoperators and Virtual Environments.

[23]  R. P. Fabio.  Reliability of computerized surface electromyography for determining the onset of muscle activity. , 1987 .

[24]  Carolina Cruz-Neira,et al.  Surround-Screen Projection-Based Virtual Reality: The Design and Implementation of the CAVE , 2023 .

[25]  Gert Pfurtscheller,et al.  Analysis of Physiological Responses to a Social Situation in an Immersive Virtual Environment , 2006, PRESENCE: Teleoperators and Virtual Environments.

[26]  Massimo Bergamasco,et al.  Lowering the development time of multimodal interactive application: the real-life experience of the XVR project , 2005, ACE '05.

[27]  Thomas B. Sheridan,et al.  Musings on Telepresence and Virtual Presence , 1992, Presence: Teleoperators & Virtual Environments.