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

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Copyright © 2023 Li and Yang.

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Movement of the otoliths in the horizontal semicircular canal in the supine roll test. (A) The stable position of otoliths in the supine position with the head raised 25°. (B) The stable position of otoliths after turning to the right at 90°. (C) The stable position of otoliths after returning to the supine position. (D) The stable position of otoliths after turning 90° to the left.