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Transfer function analysis of the circulation: unique insights into cardiovascular regulation.
- J. P. Saul, R. Berger, P. Albrecht, S. P. Stein, M. Chen, R. J. Cohen
- The American journal of physiology
- 1 October 1991
We have demonstrated previously that transfer function analysis can be used to precisely characterize the respiratory sinus arrhythmia (RSA) in normal humans. To further investigate the role of the… Expand
Beat-to-beat QT interval variability: novel evidence for repolarization lability in ischemic and nonischemic dilated cardiomyopathy.
- R. Berger, E. Kasper, K. Baughman, E. Marbán, H. Calkins, G. Tomaselli
- 2 September 1997
BACKGROUND Dilated cardiomyopathy (DCM) is associated with a high incidence of malignant ventricular arrhythmias and sudden death. Abnormalities in repolarization of ventricular myocardium have been… Expand
Transfer function analysis of autonomic regulation. I. Canine atrial rate response.
We present a useful technique for analyzing the various functional components that comprise the cardiovascular control network. Our approach entails the imposition of a signal with broad frequency… Expand
An Efficient Algorithm for Spectral Analysis of Heart Rate Variability
- R. Berger, S. Akselrod, D. Gordon, R. J. Cohen
- Computer Science, Medicine
- IEEE Transactions on Biomedical Engineering
- 1 September 1986
We present a simple efficient algorithm for the derivation of a heart rate signal from the electrocardiogram. We demonstrate that the amplitude spectrum of this heart rate signal more closely matches… Expand
Pulmonary Vein Anatomy in Patients Undergoing Catheter Ablation of Atrial Fibrillation: Lessons Learned by Use of Magnetic Resonance Imaging
Background—This study sought to define the technique and results of magnetic resonance imaging (MRI) of pulmonary vein (PV) anatomy before and after catheter ablation of atrial fibrillation (AF).… Expand
Targeted disruption of the Kvlqt1 gene causes deafness and gastric hyperplasia in mice.
- M. P. Lee, J. D. Ravenel, +15 authors A. Feinberg
- The Journal of clinical investigation
- 15 December 2000
The KvLQT1 gene encodes a voltage-gated potassium channel. Mutations in KvLQT1 underlie the dominantly transmitted Ward-Romano long QT syndrome, which causes cardiac arrhythmia, and the recessively… Expand
Transfer function analysis of autonomic regulation. II. Respiratory sinus arrhythmia.
An efficient new technique was developed to investigate heart rate control at all physiologically relevant frequencies by using respiratory activity as a frequency probe of the autonomic nervous… Expand
Assessment of autonomic regulation in chronic congestive heart failure by heart rate spectral analysis.
- J. P. Saul, Y. Arai, R. Berger, L. S. Lilly, W. Colucci, R. J. Cohen
- The American journal of cardiology
- 1 June 1988
Neurohumoral modulation of cardiovascular function is an important component of the hemodynamic alterations in patients with chronic congestive heart failure (CHF). Analysis of heart rate (HR)… Expand
Beat to beat variability in cardiovascular variables: noise or music?
- M. L. Appel, R. Berger, J. P. Saul, J. Smith, R. J. Cohen
- Journal of the American College of Cardiology
- 1 November 1989
Cardiovascular variables such as heart rate, arterial blood pressure, stroke volume and the shape of electrocardiographic complexes all fluctuate on a beat to beat basis. These fluctuations have… Expand
Magnetic Resonance Assessment of the Substrate for Inducible Ventricular Tachycardia in Nonischemic Cardiomyopathy
Background— Patients with left ventricular dysfunction have an elevated risk of sudden cardiac death. However, the substrate for ventricular arrhythmia in patients with nonischemic cardiomyopathy… Expand