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. 2022 Jul 22;16:915302. doi: 10.3389/fnins.2022.915302

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Copyright © 2022 Walia, Shew, Lefler, Kallogjeri, Wick, Holden, Durakovic, Ortmann, Herzog and Buchman.

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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Patient examples of ECochG response to multifrequency ECochG using 250- and 500-Hz tone burst. (A–D) Show four different insertion tracks. (A) No asynchrony between 250- and 500-Hz response. (B) Overall rise in response with one dyssynchronous point (marked with black arrow) where there is stability in 250-Hz response and drop in 500-Hz response. (C,D) Multiple dyssynchronous points (black arrows) noted between 250- and 500-Hz response with overall rise in 250-Hz response and drop in 500-Hz response. CM Drops >30% are shown as asterisks.