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Perception of smooth and perturbed vection in short-duration microgravity

Journal Article


Abstract


  • Successful adaptation to the microgravity environment

    of space and readaptation to gravity on earth

    requires recalibration of visual and vestibular signals.

    Recently, we have shown that adding simulated viewpoint

    oscillation to visual self-motion displays produces more

    compelling vection (despite the expected increase in visualvestibular

    conflict experienced by stationary observers).

    Currently, it is unclear what role adaptation to gravity might

    play in this oscillation-based vection advantage. The vection

    elicited by optic flow displays simulating either smooth

    forward motion or forward motion perturbed by viewpoint

    oscillation was assessed before, during and after microgravity

    exposure in parabolic flight. During normal 1-g

    conditions subjects experienced significantly stronger

    vection for oscillating compared to smooth radial optic flow.

    The magnitude of this oscillation enhancement was reduced

    during short-term microgravity exposure, more so for simulated

    interaural (as opposed to spinal) axis viewpoint

    oscillation. We also noted a small overall reduction in vection

    sensitivity post-flight. A supplementary experiment

    found that 1-g vection responses did not vary significantly

    across multiple testing sessions. These findings: (i) demonstrate

    that the oscillation advantage for vection is very

    stable and repeatable during 1-g conditions and (ii) imply

    that adaptation or conditioned responses played a role in the

    post-flight vection reductions. The effects observed in

    microgravity are discussed in terms of the ecology of terrestrial

    locomotion and the nature of movement in

    microgravity.

UOW Authors


  •   Allison, Robert S. (external author)
  •   Zacher, James E. (external author)
  •   Kirollos, Ramy (external author)
  •   Guterman, Pearl S. (external author)
  •   Palmisano, Stephen

Publication Date


  • 2012

Citation


  • Allison, R. S., Zacher, J. E., Kirollos, R., Guterman, P. & Palmisano, S. A. (2012). Perception of smooth and perturbed vection in short-duration microgravity. Experimental Brain Research, 233 (4), 479-487.

Scopus Eid


  • 2-s2.0-84871290150

Ro Metadata Url


  • http://ro.uow.edu.au/hbspapers/3137

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 479

End Page


  • 487

Volume


  • 233

Issue


  • 4

Place Of Publication


  • Germany

Abstract


  • Successful adaptation to the microgravity environment

    of space and readaptation to gravity on earth

    requires recalibration of visual and vestibular signals.

    Recently, we have shown that adding simulated viewpoint

    oscillation to visual self-motion displays produces more

    compelling vection (despite the expected increase in visualvestibular

    conflict experienced by stationary observers).

    Currently, it is unclear what role adaptation to gravity might

    play in this oscillation-based vection advantage. The vection

    elicited by optic flow displays simulating either smooth

    forward motion or forward motion perturbed by viewpoint

    oscillation was assessed before, during and after microgravity

    exposure in parabolic flight. During normal 1-g

    conditions subjects experienced significantly stronger

    vection for oscillating compared to smooth radial optic flow.

    The magnitude of this oscillation enhancement was reduced

    during short-term microgravity exposure, more so for simulated

    interaural (as opposed to spinal) axis viewpoint

    oscillation. We also noted a small overall reduction in vection

    sensitivity post-flight. A supplementary experiment

    found that 1-g vection responses did not vary significantly

    across multiple testing sessions. These findings: (i) demonstrate

    that the oscillation advantage for vection is very

    stable and repeatable during 1-g conditions and (ii) imply

    that adaptation or conditioned responses played a role in the

    post-flight vection reductions. The effects observed in

    microgravity are discussed in terms of the ecology of terrestrial

    locomotion and the nature of movement in

    microgravity.

UOW Authors


  •   Allison, Robert S. (external author)
  •   Zacher, James E. (external author)
  •   Kirollos, Ramy (external author)
  •   Guterman, Pearl S. (external author)
  •   Palmisano, Stephen

Publication Date


  • 2012

Citation


  • Allison, R. S., Zacher, J. E., Kirollos, R., Guterman, P. & Palmisano, S. A. (2012). Perception of smooth and perturbed vection in short-duration microgravity. Experimental Brain Research, 233 (4), 479-487.

Scopus Eid


  • 2-s2.0-84871290150

Ro Metadata Url


  • http://ro.uow.edu.au/hbspapers/3137

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 479

End Page


  • 487

Volume


  • 233

Issue


  • 4

Place Of Publication


  • Germany