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

Metrics of heart period variability are widely used in the behavioral and biomedical sciences,
although somewhat confusingly labeled as heart rate variability (HRV). Despite their wide …

Heart rate variability is a recognized tool for the estimation of cardiac autonomic
modulations. Recently, several studies have advanced the field of heart rate variability in …

Psychophysiological research integrating heart rate variability (HRV) has increased during
the last two decades, particularly given the fact that HRV is able to index cardiac vagal tone …

Heart rate variability (HRV), the beat-to-beat variation in either heart rate or the duration of
the RR interval, has become a popular clinical and investigational tool (Task Force of the …

Background The autonomic nervous system sends messages through the sympathetic and
parasympathetic nervous system. The sympathetic nervous system innervates the …

The normal heart rate is subject to continuous modulation by autonomic and other
physiologic mechanisms in response to physical or mental stress, exercise, respiration, and …

The high frequency component of heart rate variability (HRV) has reliably been shown to
serve as an index of autonomic inhibitory control and is increasingly considered as a …

Heart rate variability, the change in the time intervals between adjacent heartbeats, is an
emergent property of interdependent regulatory systems that operates on different time …

Cardiovascular variabilities were recognized over 250 years ago, but only in the past 20
years has their apparent utility come to be appreciated. Technological advancement has …