منابع مشابه
Analyzing temporal variability of standard descriptors of Poincaré plots.
The Poincaré map is a visual technique to recognize the hidden correlation patterns of a time series signal. The standard descriptors of the Poincaré map are used to quantify the plot that measures the gross variability of the time series data. However, the problem lies in capturing temporal information of the plot quantitatively. In this article, we propose a new formulation for calculating th...
متن کاملMultiscale Poincaré plots for visualizing the structure of heartbeat time series
BACKGROUND Poincaré delay maps are widely used in the analysis of cardiac interbeat interval (RR) dynamics. To facilitate visualization of the structure of these time series, we introduce multiscale Poincaré (MSP) plots. METHODS Starting with the original RR time series, the method employs a coarse-graining procedure to create a family of time series, each of which represents the system's dyn...
متن کاملInformative Nature and Nonlinearity of Lagged Poincaré Plots Indices in Analysis of Heart Rate Variability
Lagged Poincaré plots have been successful in characterizing abnormal cardiac function. However, the current research practices do not favour any specific lag of Poincaré plots, thus complicating the comparison of results of different researchers in their analysis of heart rate of healthy subjects and patients. We researched the informative nature of lagged Poincaré plots in different states of...
متن کاملEstimating cardiac autonomic activity during sleep: impedance cardiography, spectral analysis, and Poincaré plots.
OBJECTIVE To compare noninvasive measures of cardiac autonomic activity during sleep. METHODS The absolute and normalized (n.u.) high and low frequency peaks from the spectral analysis of R-R intervals (HF, LF, HFn.u., LFn.u.), LF/HF ratio, pre-ejection period (PEP) from impedance cardiography, and the autocorrelation coefficient (rRR) as illustrated in Poincaré plots were measured during nig...
متن کاملPoincaré plots and tachograms reveal beat patterning in sick sinus syndrome with supraventricular tachycardia and varying AV nodal block.
Using 24-h ambulatory electrocardiography, the RR intervals of all beats were determined in a West Highland white terrier with sick sinus syndrome characterized by long sinus pauses, bradycardia, supraventricular tachycardia (SVT) and varying degrees of atrioventricular (AV) heart block. Distinctive patterns of bradycardia and 1:1, 2:1, 3:1, 4:1 and 5:1 AV block associated with SVT were evident...
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ژورنال
عنوان ژورنال: Computational Methods in Science and Technology
سال: 2005
ISSN: 1505-0602
DOI: 10.12921/cmst.2005.11.01.39-48