Search Results - "Dorota Wejer"

Dynamical Landscape of Heart Rhythm in Long-Term Heart Transplant Recipients: A Way to Discern Erratic Rhythms by Wdowczyk, Joanna, Makowiec, Danuta, Gruchała, Marcin, Wejer, Dorota, Struzik, Zbigniew R

“…It is commonly believed that higher values of heart rate variability (HRV) indices account for better organization of the network of feedback reflexes driving…”
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Dynamical Pattern Representation of Cardiovascular Couplings Evoked by Head-up Tilt Test by Makowiec, Danuta, Wejer, Dorota, Graff, Beata, Struzik, Zbigniew

“…Shannon entropy (ShE) is a recognised tool for the quantization of the temporal organization of time series. Transfer entropy (TE) provides insight into the…”
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Entropic Measures of Complexity of Short-Term Dynamics of Nocturnal Heartbeats in an Aging Population by Danuta Makowiec, Agnieszka Kaczkowska, Dorota Wejer, Marta Żarczyńska-Buchowiecka, Zbigniew R. Struzik

“…Two entropy-based approaches are investigated to study patterns describing differences in time intervals between consecutive heartbeats. The first method…”
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Entropy Measures in the Assessment of Heart Rate Variability in Patients with Cardiodepressive Vasovagal Syncope by Beata Graff, Grzegorz Graff, Danuta Makowiec, Agnieszka Kaczkowska, Dorota Wejer, Szymon Budrejko, Dariusz Kozłowski, Krzysztof Narkiewicz

“…Sample entropy (SampEn) was reported to be useful in the assessment of the complexity of heart rate dynamics. Permutation entropy (PermEn) is a new measure…”
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Complexity of cardiovascular rhythms during head-up tilt test by entropy of patterns by Wejer, Dorota, Graff, Beata, Makowiec, Danuta, Budrejko, Szymon, Struzik, Zbigniew R

“…The head-up tilt (HUT) test, which provokes transient dynamical alterations in the regulation of cardiovascular system, provides insights into complex…”
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Chronographic Imprint of Age-Induced Alterations in Heart Rate Dynamical Organization by Makowiec, Danuta, Wejer, Dorota, Kaczkowska, Agnieszka, Żarczyńska-Buchowiecka, Marta, Struzik, Zbigniew R

“…Beat-to-beat changes in the heart period are transformed into a network of increments between subsequent RR-intervals, which enables graphical descriptions of…”
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Causal relationships in the variability of cardiovascular system evoked by orthostatic stress by transfer entropy by Wejer, Dorota, Faes, Luca, Makowiec, Danuta

“…The coupling between cardiac and vascular systems in healthy volunteers, elicited by the head-up tilt test is estimated by means of transfer entropy with…”
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The data-based model of interaction between the respiratory and cardiovascular systems by Wejer, Dorota, Graff, Beata, Narkiewicz, Krzysztof, Makowiec, Danuta

“…Respiration and heart rate continuously interact, and in the following, we are looking for variations in RR-intervals, systolic, and diastolic blood pressure…”
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Visualization of short-term heart period variability with network tools as a method for quantifying autonomic drive by Makowiec, Danuta, Graff, Beata, Kaczkowska, Agnieszka, Graff, Grzegorz, Wejer, Dorota, Wdowczyk, Joanna, Zarczynska-Buchowiecka, Marta, Gruchala, Marcin, Struzik, Zbigniew R

“…Signals from heart transplant recipients can be considered to be a natural source of information for a better understanding of the impact of the autonomic…”
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Network approach to increments of RR-intervals for visualization of dynamics of cardiac regulation by Makowiec, Danuta, Struzik, Zbigniew R., Graff, Beata, Graff, Grzegorz, Wejer, Dorota, Kaczkowska, Agnieszka, Wdowczyk-Szulc, Joanna, Buchowiecka, Marta

“…The transition network for RR-increments is presented in a directed and weighted graph, with vertices representing RR-increments and edges corresponding to the…”
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Temporal changes in complexity of cardiovascular regulation during head-up tilt test by entropic measures of fluctuations of heart period intervals and systolic blood pressure by Wejer, Dorota, Kaczkowska, Agnieszka, Makowiec, Danuta, Struzik, Zbigniew R., Graff, Beata, Graff, Grzegorz, Budrejko, Szymon, Kozlowski, Dariusz, Narkiewicz, Krzysztof

“…Dynamical aspects of cardiovascular regulation in the head-up tilt test are revealed through the properties of the approximate entropy and sample entropy of…”
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