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Example recordings. PPG (upper) and ECG (lower) recordings from three patients. Panel (A) shows a patient with sinus rhythm, panel (B) atrial fibrillation with lenient heart rate and panel (C) atrial fibrillation with high heart rate. Algorithm ECG QRS detection points and PPG pulse detection points are marked with red circles. A PIN time series was formed with detected PPG pulses for PIN-based AF detection features. ECG, electrocardiogram; PPG, photoplethysmography; HR, heart rate.
