There are many discussions about vestibular sensitivity. We live in the digital computer age and it is high time to overview the vestibular misteries from the point of the exact quantitative measurements. The concept of vestibular system and its role in space orientation is discussed [Ropper, Brown (USA), Wiltschko (Australia), Claussen (Germany), Trinus (USA, Germany, Ukraine)]. The sensitivity measure is threshold. The theory of conventional and relativistic threshold is presented in popular form, as well as its application to vestibular system. Knowledge about undiscriminated and inverted vestibular sensations, phase analysis in the threshold determination, vestibular tolerance and adaptation are known to narrow circle of scientists. Presentation these data to Wikipedia readers surely will initiate new step in scientific and technological progress.

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