title: Effects of rectilinear acceleration and optokinetic and caloric stimulations in space.
abstract: During the flight of Spacelab 1 the crew performed a number of experiments to explore changes in vestibular function and visual-vestibular interactions on exposure to microgravity. Measurements were made on the threshold for detection of linear oscillation, vestibulo-ocular reflexes elicited by angular and linear movements, oculomotor and posture responses to optokinetic stimulations, and responses to caloric stimulation. Tests were also conducted on the ground, during the 4 months before and on days 1 to 6 after flight. The most significant result was that caloric mystagmus of the same direction as on the earth could also be evoked in the weightless environment.
mesh_terms: D000054:Acceleration; D002150:Caloric Tests; D004585:Electrooculography; D005133:Eye Movements; D006257:Head / Q000502:physiology; D006801:Humans; D009039:Motion Perception / Q000502:physiology; D009068:Movement; D009760:Nystagmus, Physiologic; D013026:Space Flight; D014724:Vestibular Function Tests; D014722:Vestibule, Labyrinth / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*; D014893:Weightlessness