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. 2016 Sep 23;7:160. doi: 10.3389/fneur.2016.00160

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Copyright © 2016 Shen, Magnani, Sterkers, Lamas, Vidal, Sadoun, Curthoys and de Waele.

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) or licensor 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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Relationship between peak saccade velocity and peak head velocity. (A) The ratio between peak saccade velocity (°/s) and peak head velocity (°/s) is close to 2.5 in normal subjects (black circles), whereas it is lower than 1.10 in acute UVL patients (gray squares). (B) The ratio varies from 0 to normal values in chronic UVL patients. Notice that normal values were only seen in some patients treated with gamma-knife therapy because of unilateral vestibular schwannoma (empty triangle) or patients suffering from Meniere’s disease and treated by intratympanic gentamycin injections (gray circles), but not patients with vestibular schwannoma operated after 6 weeks (gray diamonds). (C) The ratio in BVL patients (gray triangles) is lower than 1.37.