• Detrended fluctuation analysis of heart rate by means of symbolic series 

      Valencia Murillo, José Fernando; Vallverdú Ferrer, Montserrat; Schroeder, Rico; Voss, Andreas; Cygankiewicz, I.; Vazquez, R.; Bayes de Luna, Antonio; Caminal Magrans, Pere (2010)
      Text en actes de congrés
      Accés obert
      Detrended fluctuation analysis (DFA) has been shown to be a useful tool for diagnosis of patients with cardiac diseases. The scaling exponents obtained with DFA are an indicator of power-law correlations in signal ...
    • The effect of respiration-induced heart movements on the ECG 

      Pallàs-Areny, Ramon; Colominas i Balagué, Josep; Rosell Ferrer, Francisco Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1989-06-01)
      Article
      Accés obert
      We present a model describing the rotation of the cardiac vector as a possible mechanism resulting in the presence of respiratory information in the ECG. The way in which this information is revealed is analyzed and the ...