Power spectral analysis (PSA) of heart-rate variations has recently proved a useful tool in
evaluating cardiovascular autonomic activity. It offers the possibility of examining both the …

Objective: Clinical indexes of autonomic activity are based on the analysis of sinus cycle
length and of its variability. A common assumption underlying this practice is that neural …

Изучены механизмы адаптации студентов первых и третьих курсов к учебной
деятельности Показано, что в процессе их адаптации существенное место …

A time-variant algorithm of autoregressive (AR) identification is introduced and applied to the
heart rate variability (HRV) signal. The power spectrum is calculated from the AR coefficients …

The authors consider parametric methods for processing cardiovascular signals and try to
provide a global, although indirect evaluation of some neural regulatory activities. In …

Objective: Undiagnosed atrial fibrillation (AF) patients are at high risk of cardioembolic
stroke or other complications. The aim of this study was to analyze the blood volume pulse …

Heart Rate Variability. The time series of successive heart periods present important
variations around its mean value, determining the phenomenon of heart rate variability …

Background: Various experimental and clinical observations suggest changes in
sympathetic and vagal neural regulatory mechanisms play a critical role in altering cardiac …

We analyzed the discharges of 77 single neurons located in the rostral ventrolateral medulla
(RVLM, n= 25), caudal ventrolateral medulla (CVLM, n= 18), lateral tegmental field (LTF, n …

BACKGROUND AND OBJECTIVES--Autonomic dysfunction seems to be involved in the
progression and prognosis of severe congestive heart failure. Parasympathetic activity can …