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CosmoScoutVR_Connor.md

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CosmoScoutVR: A Case Study of Navigational Techniques for Cybersickness Reduction

Source

  • No significant differences between tested navigation techniques
  • Cybersickness caused by conflict between visual cortex and vestibular system
  • typical movements in the physical world can induce nausea, headache, eye strain, and in extreme cases vomiting
  • effect exacerbated when there are high levels of visual detail

Tested movement techniques:

  1. Teleportation
    • instantaneous repositioning is believed to result in little to no Cybersickness
  2. Semi-automatic navigation
    • allows developers to create structure around navigation, while still allowing the user a sense of control over their orientation
  3. 2-degrees-of-freedom trackpad navigation
    • smooth & continuous control over orientation
    • greater sense of presence resulting in less cybersickness
  4. dynamic Field-of-View manipulation
    • shrinking FOV when moving, decreasing peripheral visual information

Study:

  • 15 participants (14 male, 1 female)

    • 6 w/ glasses
    • minimal previous experiences with VR

  • participants maneuver through a virtual environment using the different navigation techniques

  • seated in a swivel chair

  • 60 seconds per navigation technique to collect randomly positioned cubes on a planet within the simulation

Conclusion:

  • Cybersickness should be considered highly nuanced with multiple sources and influences
    • other sources may be:
      • realism
      • visual detail
      • presence
      • uncanny valley effect
  • downgrading level of realism may avoid Cybersickness but impedes sense of presence -presence necessary to minimize visual and vestibular gap that evokes Cybersickness

Checkup:

  • Mauchly's test of sphericity
  • Freidman's test for repeated measures

Further Reading:

  • Guided navigation of virtual environments; T.A. Galyean
  • New vr navigation techniques to reduce cybersickness; A. Kemeny, P. George, F. Mérienne, F. Colombet
  • Effect of Visual Realism on Cybersickness in Virtual Reality; A. Tiiro
  • Cyber sick but still having fun; S. von Mammen, A. Knote, S. Edenhofer
  • Presence and cybersickness in virtual reality are negatively related: a review; S. Weech, S. Kenny, M. Barnett-Cowan