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World J Cardiol. Mar 26, 2026; 18(3): 116299
Published online Mar 26, 2026. doi: 10.4330/wjc.v18.i3.116299
Figure 3
Figure 3 Frequencies of cardiac signals and artifacts showing significant overlap. P and T waves overlap with tremors; ST shifts overlap with baseline wander; QRS overlaps with 50 Hz interference. ECG: Electrocardiogram.


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