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. 2023 Feb 17;14:1132343. doi: 10.3389/fneur.2023.1132343

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Copyright © 2023 Li and Yang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Movement of the otoliths in the horizontal semicircular canal in the prone roll test. (A) Initial distribution setting of the otoliths in the sitting position. (B) The stable position of the otoliths after transfer from the sitting position to the prone position. (C) The stable position of the otoliths after further rotation to the left by 90°. (D) The stable position of the otoliths after returning to the prone position. (E) The stable position of the otoliths after a further 90° rotation to the right. (F) The stable position of the otoliths after returning to the prone position.