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. 2017 Aug 11;16:103. doi: 10.1186/s12938-017-0391-2

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© The Author(s) 2017

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. 5 — Overview of SNRD values for the studied artifact conditions. The SNRD values are expressed as a color-code for the clinical frequency bands, delta (0.5–4 Hz), theta (4–8 Hz), alpha (8–12 Hz), beta (12–32 Hz) and gamma (32–100 Hz). In addition, the SNRD is given in numbers for the frequency band from 32 to 48 Hz. For the relaxed condition, the SNR is given instead of the SNRD value. Negative SNRD values were set to 0 dB