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A temporary threshold shift for self-motion detection following sustained, oscillating linear accelerationThresholds for detecting linear motion (self-motion) increased following exposure of human observers to sustained linear oscillation (fatiguing stimulus) at 0.26 Hz and approximately 0.5 G peak-to-peak for durations up to 30 min. Recovery to preexposure levels took place over a period of 10 to 15 min following the sustained oscillation termination. Differences in threshold shift magnitudes following sustained oscillation in various orientations support the interpretation that the observed threshold shifts resulted from fatigue of the utricular otolith receptors. Threshold shifts were not obtained following exposure of the human observers to sustained, unidirectional linear acceleration (2G) for durations up to 10 min with a centrifuge. The results of this study suggest a previously unobserved response property of the otolith organs, namely, that these organs can be fatigued in a manner analogous to other receptor systems.
Document ID
19780057901
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Parker, D. E.
(Miami Univ. Oxford, OH, United States)
Gulledge, W. L.
(Miami Univ. Oxford, OH, United States)
Tubbs, R. L.
(Miami Univ. Oxford, OH, United States)
Littlefield, V. M.
(Miami University Oxford, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1978
Publication Information
Publication: Perception and Psychophysics
Volume: 23
Issue: 6, Ju
Subject Category
Aerospace Medicine
Accession Number
78A41810
Funding Number(s)
CONTRACT_GRANT: F33615-75-C-5029
CONTRACT_GRANT: NAS9-14538
Distribution Limits
Public
Copyright
Other

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