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. 2018 Mar 15;4:3. doi: 10.1186/s42234-018-0002-y

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© The Author(s) 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Electrophysiological recording system for the cervical vagus nerve. a Lab-made hook electrode with three leads was used to record cervical vagus nerve activity. b A cuff electrode purchased from Cortec was used to record cervical vagus nerve activity. c Artist rendering of isolated cervical vagus nerve (not to scale)