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Front Physiol. 2018 Oct 22;9:1469. doi: 10.3389/fphys.2018.01469. eCollection 2018.

Influence of Magnitude and Duration of Altered Gravity and Readaptation to 1 g on the Structure and Function of the Utricle in Toadfish, .

Frontiers in physiology

Richard Boyle, Yekaterina Popova, Joseph Varelas

Affiliations

  1. National Aeronautics and Space Administration Ames Research Center, Moffett Field, CA, United States.
  2. Universities Space Research Association (USRA) Science & Technology Innovation Labs at NASA Ames Research Center, Moffett Field, CA, United States.

PMID: 30405430 PMCID: PMC6204554 DOI: 10.3389/fphys.2018.01469

Abstract

Gravity has remained constant during animal evolution and the neural sensory systems detecting acceleration forces have remained remarkably conserved among vertebrates. The utricular organ senses the sum of inertial force due to head translation and head tilt relative to gravitational vertical. Change in gravitational force would be expected to have profound effects on how an organism maintains equilibrium. We characterize the physiology of utricular afferents to applied accelerations in the oyster toadfish,

Keywords: acceleration; afferents; centrifugation; electrophysiology; gravity; hair cells; serial electron microscopy reconstruction; spaceflight

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