Jun. 29, 2021
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Left-beating nystagmus after horizontal head-shaking. H = horizontal position of the left eye, V = vertical position of the left eye, T = torsional position of the left eye. In each recording, upward deflection indicates rightward, upward, and clockwise eye motion. (From: Liqun Z, Park KH, Kim HJ, Lee SU, Choi JY, Kim JS. Acute unilateral audiovestibulopathy due to embolic labyrinthine infarction. Front Neurol 20182;9:311. Creative Commons Attribution License; CC BY.) (Contributed by Dr. Douglas Lanska.)