Novel characterization method of impedance cardiography signals using time-frequency distributions

Time-frequency Features for Impedance Cardiography Signals During Anesthesia Using Different Distribution Kernels.

OBJECTIVE This works investigates the time-frequency content of impedance cardiography signals during a propofol-remifentanil anesthesia. MATERIALS AND METHODS In the last years, impedance cardiography (ICG) is a technique which has gained much attention. However, ICG signals need further investigation. Time-Frequency Distributions (TFDs) with 5 different kernels are used in order to analyze ...

Discrimination of Audio Signals Using Time-Frequency Distributions

Humans can discriminate speech from music easily in their mind without any influence of the mixed music. Due to the new techniques of analysis and synthesis of speech signals, the musical signal processing has gained particular weight, and therefore, the classical sound analysis techniques are used in processing music signals. Music art has a long and distinguished history. It goes back to the ...

Systolic time intervals and impedance cardiography.

Impedance Cardiography *

Objective: To evaluate the following: (1) the intramethod variability of impedance cardiography (ICG) cardiac output (CO) measurements via the latest generation monitor and thermodilution CO measurements (CO-TDs); (2) the intermethod comparison of ICG CO and CO-TD; and (3) comparisons of the intergeneration ICG CO equation to CO-TD, using the latest ICG CO equation, the ZMARC (CO-ICG), and the ...

Adaptive Estimation of Low Frequency Noise in Impedance Cardiography

Adaptive systems are employed in the cancelation of noises and estimation of periodic and quasi periodic signals. Amongst these signals are the electrocardiogram (ECG),impedance cardiography, brain evoked potentials and modulated signals in telecommunication applications. In this paper we study the behaviour of the weights of the LMS algorithm when used to estimate the coefficients of the discr...