Components of heart rate variability have attracted considerable attention in psychology and
medicine and have become important dependent measures in psychophysiology and …

A consistent link appears to exist between predominance of vagal or sympathetic activity
and predominance of HF or LF oscillations, respectively: RR variability contains both of …

BACKGROUND The powers of the low-frequency (LF) and high-frequency (HF) oscillations
characterizing heart rate variability (HRV) appear to reflect, in their reciprocal relationship …

Autonomic characteristics of generalized anxiety disorder (GAD) and worry were examined
using measures of heart period variability. The cardiorespiratory responses of 34 GAD …

Reduced heart rate variability carries an adverse prognosis in patients who have survived
an acute myocardial infarction. This article reviews the physiology, technical problems of …

This paper reviews the methods used for editing of the R–R interval time series and how this
editing can influence the results of heart rate (HR) variability analyses. Measurement of HR …

Frequency-domain analyses of RR intervals are used widely to estimate levels of autonomic
neural traffic to the human heart. Because respiration modulates autonomic activity, we …

Fluctuations in heart rate above 0.03 Hz reflect autonomic modulation of sinoatrial node
activity. To assess the dynamics of autonomic nervous activity during and immediately after …

Timely detection of cardiac abnormalities from an Electrocardiogram (ECG) signal is very
essential. This requires its appropriate and efficient processing. In the literature, most of the …

In this study, we tested the hypothesis that the neural control of circulation in humans
undergoes continuous but in part predictable changes throughout the day and night …