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. 2023 Jul 21;13:11787. doi: 10.1038/s41598-023-38607-7

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© The Author(s) 2023

Open Access This 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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Wavelet coherence between the gold-standard SCG $^{g}$ and vision-based SCG $^{v}$ signals calculated for the breath-hold experiment at the end of exhalation. The white dashed line shows the cone of influence. Subject numbers are indicated on the top right corner of each plot. Pink numbers correspond to female subjects. For this experiment, the video from subject 4 (female) was not saved properly and, therefore, is missing.