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Rotors are rotating electrical waves that may sustain atrial fibrillation (AF); thereby providing therapeutic targets for catheter ablation. We propose a method for identifying rotors from circular catheter recordings of bipolar intracardiac electrograms (EGM) during AF. We use dominant frequency-based periodicity detection along with a graph search algorithm to identify the most dominant periodic...
Biological signals, such as intracardiac electrograms during atrial fibrillation (AF), can contain multiple periodic components or peaks. We propose a method for identifying individual periodic peak trains in signals containing multiple such periodic sequences. We use dominant frequency-based periodicity detection along with a graph search algorithm to identify the most dominant periodic activation...
Abnormal components in the QRS complex on the surface electrocardiogram have been used to predict sudden cardiac death in patients with heart disease. We propose a novel method to automate detection of abnormal peaks within the QRS complex. The approach involves identification of such peaks from consecutive unfiltered 10-beat QRS averages. A simulation using synthetic QRS peaks is conducted to assess...
In this topic, a new trans-impedance-mode filter structure realizing low pass (LP), band pass (BP), band reject (BR), high pass (HP) and all pass (AP) filtering functions using three Z-copy current follower trans-conductance amplifiers (ZC-CFTAs) and two grounded capacitors is proposed. The proposed structure realizes all the five standard filtering functions, but one at a time without requiring any...
In this paper a new single-input three-output (SITO) electronically tunable voltage-mode biquad filter using single current controlled current conveyor trans-conductance amplifier (CCCCTA) is proposed. The proposed voltage-mode filter employs only one resistor and two grounded capacitors as passive elements and can simultaneously realize low pass (LP), band pass (BP), and band reject (BR) filter functions...
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