Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Benhur Aysin"'
Autor:
Robert L. Lux, Iain Guy Strachan, Brock E. Heinz, Martino Vaglio, Jay W. Mason, Benhur Aysin, Thomas E. Moon, Fabio Badilini
Publikováno v:
Journal of Electrocardiology. 49:362-370
Background Existence of a relationship between the electrocardiographic QRS interval duration and the diurnally varying heart rate, of consistent sign and magnitude, is controversial and the relationship has not been fully characterized in normal pop
Publikováno v:
IEEE Transactions on Biomedical Engineering. 52:878-889
Although a number of time-frequency representations have been proposed for the estimation of time-dependent spectra, the time-frequency analysis of multicomponent physiological signals, such as beat-to-beat variations of cardiac rhythm or heart rate
Publikováno v:
Circulation Research. 88:705-712
Abstract —Cardiac cycle dynamics reflect underlying physiological changes that could predict imminent arrhythmias but are obscured by high complexity, nonstationarity, and large interindividual differences. To overcome these problems, we developed
Autor:
Venkateshwar Gottipaty, Susan Brode, Benhur Aysin, Vladimir Shusterman, Kelley P. Anderson, Raul Weiss
Publikováno v:
Journal of Cardiovascular Electrophysiology. 10:897-904
RR Dynamics Before VT. Introduction: We hypothesized that autonomic activity preceding spontaneous sustained monomorphic ventricular tachycardia (VTsm) as assessed by heart rate (HR) and RR interval variability (RRV) differs between type 1 VTsm which
Autor:
Raul Weiss, Kelley P. Anderson, Vladimir Shusterman, David Schwartzman, Susan Brode, Benhur Aysin, Venkateshwar Gottipaty
Publikováno v:
Journal of the American College of Cardiology. 32:1891-1899
Objectives. We hypothesized that neurohormonal activity contributes to the initiation of sustained ventricular tachycardia (VT) as reflected in indices of heart rate variability (HRV).Background. Autonomic nervous system activity participates in expe
Autor:
Elif Aysin, Benhur Aysin
Publikováno v:
EMBC
Beat-to-beat changes in cardiac signals or heart rate variability (HRV) are controlled by the two branches of autonomic nervous system (ANS) in a very complex manner. Although traditional HRV (tHRV) analysis has shown to provide information on cardia
Publikováno v:
Journal of electrocardiology.
Diminished beat-to-beat variations in cardiac cycle lengths (CLs) are associated with poor prognosis after acute myocardial infarction and in patients with heart failure. Short-long-short sequences of cardiac cycles, or ultra-short rhythm instabiliti
Publikováno v:
Journal of the American College of Cardiology. 41(6)
Autor:
Irmute Usiene, Maksim Glukhovskoy, Anna Beigel, Benhur Aysin, Vladimir Shusterman, Peter J. Jannetta
Publikováno v:
Journal of electrocardiology.
Natural mechanical stimulation of the brainstem area by the blood pressure waves propagating in the adjacent arteries plays an important role in the homeostasis of the brainstem centers of cardiovascular control. However, effects of direct mechanical
Publikováno v:
Scopus-Elsevier
We show that denoising a non-stationary signal is possible by means of a Karhunen-Loeve (KL) expansion optimized by an entropy criterion. This criterion is used to segment the noisy signal and to choose the most parsimonious KL representation possibl