Res Vestib Sci.  2020 Mar;19(1):1-5. 10.21790/rvs.2020.19.1.1.

Vestibular Responses to Gravity Alterations

Affiliations
  • 1Department of Otolaryngology, Inha University Hospital, Incheon, Korea
  • 2Research Institute for Aerospace and Medicine, Inha University Hospital, Incheon, Korea

Abstract

Due to the adaptation to environments on Earth, various health-related issues are raised when exposed to different circumstances in space. Of environmental factors in space, gravity alteration has been considered as one of critical environmental changes. The primary inner organ to detect the gravity change is the vestibular system, especially otolith organs, and some limited researches have conducted to understand its mechanical and physiological properties. However, the related consequences were not consistent in despite of well description in systemic effects ranged from the peripheral vestibular system to the central nervous system. Here, we revisited the neuronal and behavioral effects of the gravity alteration on the relevant organs through this review. By representing previous studies for the gravity effects on the peripheral and central vestibular system, this review would provide the concrete understanding of the vestibular responses to the gravity alteration. Also, the physiological responses are expected to provide the useful resources to understand the systemic vestibular responses under the gravity alteration.

Keyword

Vestibular system; Gravity; Neuroscience; Otolith; 전정기관; 중력; 신경과학; 이석기관
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