This study tested the effects of a motion-coupled display on task performance and self-reports of motion sickness for subjects experiencing motion at a frequency and intensity previously found to be nauseogenic. Subjects were randomly assigned to a control condition or a treatment condition. Both groups performed a simple computer game (Tetris) for a 30-minute period while moving forward and backward at 0.2 Hz in an enclosed chamber. In the treatment condition, a visual flow field whose movement was coupled to the motion of the enclosed test chamber was displayed behind and around a window in which subjects performed the computer game. For the control condition, the visual flow field elements were kept stationary. Contrary to expectations, no differences were found between the two groups on self-reported motion sickness symptoms; however, the treatment group performed significantly better than the control group on the computer game.
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