MECHANISMS OF HUMAN SPATIAL ORIENTATION (abstract of paper presented to the Fifth CASI Conference on Astronautics, Ottawa, November, 1988)

  1. Howard, I.P.
  2. Ohmi, M.
  3. Cheung, B.S.K.
  4. Landolt, J.P.
Corporate Authors
York Univ, Toronto ONT (CAN) Human Performance Lab;Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Illusions of body motion and body tilt have three important consequences for aeronautics and space. (1) They induce a convincing sense of self motion in flight simulators, (2) They are a major cause of aircraft accidents, especially in trainee pilots and (3) They are the principal cause of space sickness in astronauts. We have conducted three sets of experiments on the conditions that give rise to illusory body motion and body tilt. In one set, normal subjects and subjects with unilateral and bilateral vestibular loss were placed in various postures inside a large sphere that could be rotated about a vertical or horizontal axis. In a second set of experiments the CAE helmet-mounted flight simulator was used to investigate the effects of changing the relative sizes and distances of a central display and a peripheral display on vection and illusory tilt for yaw, roll and pitch axes. TRUNCATED
Date of publication
15 Sep 1989
Number of Pages
Reprinted from
Fifth CASI Conference on Astronautics, 1988
Microfiche filmed at DSIS;Originator's fiche received by DSIS

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