title: M.I.T./Canadian vestibular experiments on the Spacelab-1 mission: 2. Visual vestibular tilt interaction in weightlessness.
abstract: Adaptation to weightlessness includes the substitution of other sensory signals for the no longer appropriate graviceptor information concerning static spatial orientation. Visual-vestibular interaction producing roll circularvection was studied in weightlessness to assess the influence of otolith cues on spatial orientation. Preliminary results from four subjects tested on Spacelab-1 indicate that visual orientation effects were stronger in weightlessness than pre-flight. The rod and frame test of visual field dependence showed a weak post-flight increase in visual influence. Localized tactile cues applied to the feet in space reduced subjective vection strength.
mesh_terms: D000222:Adaptation, Physiological; D003463:Cues; D005364:Field Dependence-Independence; D006801:Humans; D007699:Kinesthesis / Q000502:physiology*; D009903:Optical Illusions / Q000502:physiology; D009949:Orientation / Q000502:physiology*; D013026:Space Flight; D014110:Touch / Q000502:physiology; D014722:Vestibule, Labyrinth / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*; D014893:Weightlessness