EXPERIMENTS ON DETECTION OF ROLL MOTION

  • 1 January 1978
    • journal article
    • research article
    • Vol. 49  (5) , 657-664
Abstract
Four experiments investigated the detection of whole-body roll motion by normal adult males. Experiments 1, 3 and 4 employed an earth-horizontal rotation axis and experiment 2 an earth-vertical rotation axis. Comparison of experiments 1 and 2 showed that the presence of gravireceptor stimuli increased the range of detectable angular accelerations and reduced the time required for detection. In experiment 3, stimuli were presented from a side-down orientation and this increased detection times when compared to roll from the upright. Experiments 1, 2 and 3 used blindfolded subjects, but experiment 4 found no effect on detection times of viewing a head-stablizhed visual target. There was detection of angular position and velocity, and synergistic action of the semicircular canals and gravireceptors were found. The influence of somatosensory stimuli was considered. Implications of the findings for flight simulators were discussed.

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