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Touching Sharp Virtual Objects Produces a Haptic Illusion

  • Andrea Brogni
  • Darwin G. Caldwell
  • Mel Slater
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6773)

Abstract

Top down perceptual processing implies that much of what we perceive is based on prior knowledge and expectation. It has been argued that such processing is why Virtual Reality works at all - the brain filling in missing information based on expectation. We investigated this with respect to touch. Seventeen participants were asked to touch different objects seen in a Virtual Reality system. Although no haptic feedback was provided, questionnaire results show that sharpness was experienced when touching a virtual cone and scissors, but not when touching a virtual sphere. Skin conductance responses separate out the sphere as different to the remaining objects. Such exploitation of expectation-based illusory sensory feedback could be useful in the design of plausible virtual environments.

Keywords

Virtual Reality Human Reaction Physiology Haptic Illusion 

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References

  1. 1.
    Andreassi, J.J.: Psychophysiology: Human Behavior and Physiological Response, 4th edn. Lawrence Erlbaum Associates, London (2000)Google Scholar
  2. 2.
    Armel, K., Ramachandran, V.: Projecting sensations to external objects: evidence from skin conductance response. Proceedings of the Royal Society, B, Biological Sciences 270, 1499–1506 (2003)CrossRefGoogle Scholar
  3. 3.
    Boucsein, W.: Electrodermal Activity, New York (1992)Google Scholar
  4. 4.
    Ehrsson, H.H.: The experimental induction of out-of-body experiences. Science 317(5841) (August 2007)Google Scholar
  5. 5.
    Ehrsson, H.H., Kito, T., Sadato, N., Passingham, R.E., Naito, E.: Neural substrate of body size: Illusory feeling of shrinking of the waist. PLoS Biol. 3(12) (November 2005)Google Scholar
  6. 6.
    Lackner, J.R.: Some proprioceptive influences on the perceptual representation of body shape and orientation. Brain 111(2), 281–297 (1988)CrossRefGoogle Scholar
  7. 7.
    Lenggenhager, B., Tadi, T., Metzinger, T., Blanke, O.: Video ergo sum: Manipulating bodily self-consciousness. Science 317(5841), 1096–1099 (2007)CrossRefGoogle Scholar
  8. 8.
    Petkova, V.I., Ehrsson, H.H.: If i were you: Perceptual illusion of body swapping. PLos ONE 3(12) (2008)Google Scholar
  9. 9.
    Sanchez-Vives, M.V., Slater, M.: From presence to consciousness through virtual reality. Nature Neuroscience 6(4), 8–16 (2005)Google Scholar
  10. 10.
    Slater, M., Marcos, D.P., Ehrsson, H.H., Sanchez-Vives, M.V.: Towards a digital body: The virtual arm illusion. Frontiers in Human Neuroscience 2(6) (March 2008)Google Scholar
  11. 11.
    Slater, M.: Place illusion and plausibility can lead to realistic behaviour in immersive virtual environments. Philosophical Transactions of the Royal Society B: Biological Sciences 364(1535), 3549–3557 (2009)CrossRefGoogle Scholar
  12. 12.
    Stark, L.W.: How virtual reality works! the illusions of vision in real and virtual environments. In: Proc SPIE: Symposium on Electronic Imaging: Science and Technology, vol. 2411, pp. 5–10 (February 1995)Google Scholar
  13. 13.
    Stern, R.M., Ray, W.J., Quigley, K.S.: Psychophysiological Recording, 2nd edn. Oxford University Press, Oxford (2001)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Andrea Brogni
    • 1
    • 2
  • Darwin G. Caldwell
    • 1
  • Mel Slater
    • 3
    • 4
  1. 1.Advanced Robotics Dept.Istituto Italiano di TecnologiaGenoaItaly
  2. 2.Universidad Politécnica de CataluñaBarcelonaSpain
  3. 3.ICREA-Universidad de BarcelonaBarcelonaSpain
  4. 4.Computer Science Dept.University College LondonLondonUK

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