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Updated: May 18, 2026

Estimating Vestibular Perceptual Thresholds Using a Six-Degree-Of-Freedom Motion Platform
Published on: August 4, 2022
Vestibular labyrinth contributions to human whole-body motion discrimination
Yulia Valko1, Richard F Lewis, Adrian J Priesol
1Department of Otology and Laryngology, Harvard Medical School, Boston, Massachusetts 02114, USA.
None:
To assess the contributions of the vestibular system to whole-body motion discrimination in the dark, we measured direction recognition thresholds as a function of frequency for yaw rotation, superior-inferior translation ("z-translation"), interaural translation ("y-translation"), and roll tilt for 14 normal subjects and for 3 patients following total bilateral vestibular ablation. The patients had significantly higher average threshold measurements than normal (p < 0.01) for yaw rotation (depending upon frequency, 5.4× to 15.7× greater), z-translation (8.3× to 56.8× greater), y-translation (1.7× to 4.5× greater), and roll tilt (1.3× to 3.0× greater)--establishing the predominant contributions of the vestibular system for these motions in the dark.
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