ReportsLife Sciences

Effects of rectilinear acceleration and optokinetic and caloric stimulations in space

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Science  13 Jul 1984:
Vol. 225, Issue 4658, pp. 208-212
DOI: 10.1126/science.6610216


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.