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. 2020 May 22;36(2):281–292. doi: 10.1007/s00455-020-10129-8

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© The Author(s) 2020

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — Electrode placement. The two recording electrodes were positioned longitudinally on the anterior neck, mid-way between the mental spine of the mandible and the hyoid bone (attached to white wires), with the reference electrode to the side (attached to black wire). The self-adhesive electrode discs were then taped in place (Micropore, MidMeds, Waltham Abbey, UK; not shown)