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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Experimental brain research 64 (1986), S. 279-283 
    ISSN: 1432-1106
    Keywords: Vestibulo-ocular reflex ; Semicircular canals ; Visual-vestibular interaction ; Microgravity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In two Spacelab-1 crew members the lateral eye movements evoked by active angular oscillation of the head in yaw at 1 Hz were recorded in-flight and post-flight. In one, the responses to passive angular oscillation in yaw at 0.2–1 Hz were also studied pre and post-flight. In the absence of visual fixation there was no significant change in the gain of either the active or passive vestibulo-ocular reflex (VOR) attributable to exposure to microgravity. However, when the subject fixated on a visual target that moved with his head the suppressed VOR gain was lower on the first post-flight test (performed 16 h after landing) than that obtained pre-flight or on subsequent post-flight tests.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1106
    Keywords: Vestibular instrumentation ; Methodology ; Spacelab-1 mission ; Hardware ; Microgravity research
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A series of vestibular experiments were performed in conjunction with the first Spacelab mission, consisting of sets of pre-, in- and postflight tests. A multipurpose experimental apparatus used for the diverse flight and ground tests is presented. Additional apparatus together with the multi-purpose package were used in the baseline data collection facility at the landing site at NASA Dryden Flight Research Facility for the ground tests. The tests involved optokinetic, caloric and mechanical (whole-body or head-alone) stimulation. The latter included linear acceleration in the subject's x, y and z axes, static roll and yaw about an earth-vertical axis. Physiological parameters such as electro-oculogram (EOG), blood-volume-pulse (BVP), respiration, as well as the stimulus variables such as acceleration and caloric temperature were transmitted to the ground and recorded there. The flight and ground testing schedules are outlined. Problems arising from this complex venture are discussed, and some suggestions are made for future improvement.
    Type of Medium: Electronic Resource
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