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NASA NTRS · 20040112552

Self-motion perception: assessment by real-time computer-generated animations

Parker, D. E.·Phillips, J. O.
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Abstract

We report a new procedure for assessing complex self-motion perception. In three experiments, subjects manipulated a 6 degree-of-freedom magnetic-field tracker which controlled the motion of a virtual avatar so that its motion corresponded to the subjects' perceived self-motion. The real-time animation created by this procedure was stored using a virtual video recorder for subsequent analysis. Combined real and illusory self-motion and vestibulo-ocular reflex eye movements were evoked by cross-coupled angular accelerations produced by roll and pitch head movements during passive yaw rotation in a chair. Contrary to previous reports, illusory self-motion did not correspond to expectations based on semicircular canal stimulation. Illusory pitch head-motion directions were as predicted for only 37% of trials; whereas, slow-phase eye movements were in the predicted direction for 98% of the trials. The real-time computer-generated animations procedure permits use of naive, untrained subjects who lack a vocabulary for reporting motion perception and is applicable to basic self-motion perception studies, evaluation of motion simulators, assessment of balance disorders and so on.

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Non-NASA CenterNASA Discipline NeuroscienceUser-Computer InterfaceMotion PerceptionSelf Assessment (Psychology)Video RecordingMiddle AgedSupport, U.S. Gov't, Non-P.H.SEye MovementsHuman Engineering/methodsUnited StatesAdultFemaleHumanMale

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Parker, D. E., Phillips, J. O.. 2001-02-01. Self-motion perception: assessment by real-time computer-generated animations. https://ntrs.nasa.gov/citations/20040112552

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