Robust and Accurate Anomaly Detection in ECG Artifacts Using Time Series Motif Discovery

Table 1

Common ECG artifacts with description, causes, and example.

Artifacts	Description	Cause of artifact	Example
(1) Wandering baseline	A slow wander of the baseline	(i) Body movement; (ii) Respiratory swing
(2) AC interference	Varying amplitude of ECG and indistinct isoelectric baseline	(i) Electrical power Leakage; (ii) Improper equipment grounding; (iii) Close proximity of other electrical equipment
(3) Muscle tremor	Narrow and rapid spike of ECG	(i) Effect of EMG signal; (ii) Shivering; (iii) Parkinson’s disease
(4) Motion artifact	Large swing in the baseline, uncertainty of large amplitude signals	(i) Effect of epidermal signal; (ii) Stretching the epidermis; (iii) Coughing; (iv) Ambulation	[56]