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. 2022 Mar 23;10:820217. doi: 10.3389/fbioe.2022.820217

FIGURE 7.

FIGURE 7

Qualitative scores (in the range 0–10) expressed for the (A) whole 15s-long ECG signals acquired by the three electrodes (NBT: non-breathable tattoo, BT: breathable tattoo, AgCl: gelled Ag/AgCl) and (B) their corresponding median beat templates. (C) The Person’s correlation coefficient computed between median beat templates acquired by the different electrode types: Ag/AgCl vs. non-breathable tattoo (AgCl-NBP), Ag/AgCl vs. breathable tattoo (AgCl-BT) and breathable vs. non-breathable tattoo (BT vs. NBT).