Title Page -- Contents -- Preface -- Part 1. Methodology: Linear and Nonlinear Analysis of BP & HR Variability -- Fractal Mechanisms and Heart Rate Control: Long-Range Correlations and Their Breakdown with Disease -- Nonlinearity and Nonstationarity: The Use of Surrogate Data in Interpreting Fluctuations -- Bifurcation Analysis of a Physiological Model of the Baroreceptive Control -- 1 /f Modeling of Blood Pressure and Heart Rate Spectra -- Extracting Fractal Components from Heart Rate Variability Signals -- Investigation of HRV by Model Analysis -- Time Domain Methods for Characterizing Respiratory Fluctuations of the Heart Rate: Linear Stationary, Non-Stationary and Non-Linear Approaches -- Multivariate Time-Variant Autoregressive Techniques for Closed-loop Cardiovascular Control using Simulations and Comparisons. -- Time-Dependent Analysis of Autonomic Tests: a Method Based on aligner-Ville Power Spectral Density Estimation -- Part 2. Biological Interpretation: Role of Baroflex and Other Factors in Producing BP & HR Variability -- Interpretation of Oscillations in Heart Rate and Blood Pressure -- Heart Rate and Blood Pressure Spectra during Mental Stress -- Heart Rate Variability and Baroreflex Sensitivity in Rest: a Study into Stationarity -- The Role of the Baroreceptor Reflex inComparison to Nitric Oxide in Buffering Spontaneous Fluctuations of Blood pressure -- Statistical Dependence between Blood Pressure and Heart Rate: Functional Significance and Application to the Evaluation of Baroreflex Sensitivity -- Spontaneous Cardiac Baroreflex Activity: Comparison with Drug-Induced Responses -- Spontaneous Baroreflex Sensitivity: From the Cardiovascular Laboratory to Patient's Bedside -- Arterial Baroreceptors as Determinants of 0.1Hz and Respiration-Related Changes in Blood Pressure and Heart Rate Spectra