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. 2021 Sep 23;21(19):6364. doi: 10.3390/s21196364

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Exemplary components classified as artefactual in the three signal groups (i.e., decomposition to 21, 20 and 19 ICs for G1, G2 and G3, respectively). Examples refer to the same EEG segment. Scalp topography, 3 s of time course and PSD of one IC classified ECC (a) and of two ICs classified as PCC (b,c) are shown for the decomposition to 21 ICs. The weights of the mixing matrix corresponding to the nECG and nAPS signals are represented by circles (pulse activity on the left, heart activity on the right). Scalp topography, 3 s of time course and PSD of one IC classified as ECC (d) and one IC classified as PCC (e) are shown for the decomposition to 20 ICs. The weights of the mixing matrix corresponding to the nECG is represented by a circle. In (f), the scalp topography, 3 s of the time course and PSD of one IC classified as PCC is shown for the decomposition to 19 ICs.