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. 2016 May 10;15:53. doi: 10.1186/s12938-016-0169-y

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© The Author(s). 2016

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 — Signal processing procedure to analyze the amplitude modulation effect of respiration on OscP and KorS. a Original OscP (dotted line) and KorS (solid line) acquired during cuff deflation between SBP and DBP. The OscP signal between 9 and 11 s (marked with rectangular) is zoomed in and shown on the top-right corner of panel; b Reference Resp signal (dashed line) and amplitude modulation signals on OscP (dotted line) and KorS (solid line); and c normalized power spectral density of Resp (dashed line) and amplitude modulation signals on OscP (dotted line) and KorS (solid line)