.................................................................................................................................................. II GLOSSARY OF TERMS............................................................................................................................IV TABLE OF CONTENTS ........................................................................................

Heart rate variability (HRV) refers to various methods of assessing the beat-to-beat variation in the heart over time, in order to draw inference on the outflow of the autonomic nervous system. Easy access to measuring HRV has led to a plethora of studies within emotion science and psychology assessing autonomic regulation, but significant caveats exist due to the complicated nature of HRV. Fir...

Heart Rate Variability (HRV) may be measured using different measurement techniques. Almost all of these techniques deal with ectopic beats. Either these beats are excluded from the analysis or they are required. To access the functional character and easiness of use of several HRV techniques we compared Holter registrations in three patient groups: normal subjects, post infarction patients and...

Heart Rate Variability (HRV) is widely used as an index of human autonomic nervous activity. HRV is composed of two major components: high frequency respiratory sinus arrhythmia (RSA) and low frequency sympathetic components. The ratio of LF/HF is viewed as an index of human autonomic balance, so the low frequency sympathetic and the high frequency parasympathetic components of an ECG R-R inter...

Recent research on Heart Rate Variability (HRV) has proven that Poincare Plot is a powerful tool to mark Short Term and Long Term Heart Rate Variability. This study focuses a comprehensive characterization of HRV among the Tea Garden Workers of the Northern Hilly Regions of West Bengal. The characterization, as available from the data sets, projects the average values of SD1 characteristics, th...

The heart rate variability is a useful method to assess cardiac autonomic modulation in patients undergoing dental procedures, because knowledge of physiological conditions provides greater security to the professional as well as the possibility of a better plan treatment to patient benefit. The aim of our study was to describe the association between cardiac autonomic control and dental variab...

Pregnancy is biggest physiological challenge in a woman’s life that necessitates cardiovascular adjustment to meet metabolic demands from the growing fetus. Multiple factors contribute to this physiologic hemodynamic alterations, of which Autonomic nervous control plays a vital role, derangement of which ends up in PIH .We aimed to study the adaptation in autonomic control during normal pregnan...

The analysis of heart rate variability (HRV) is becoming widely used in clinical research to provide a window into autonomic control of HR. This technique has been valuable in elucidating the autonomic underpinnings of panic disorder (PD), a condition that is marked by reports of heart palpitations. A body of research has emerged that implicates a relative reduction in HRV and cardiac vagal ton...

Objectives: The autonomic nervous system (ANS) dysregulation is a well known risk of adverse cardiovascular events. Analysis of heart rate variability (HRV) can give a valuable window into the ANS function being implicated in various medical diseases. But HRV analysis is not well established although psychiatric research fi ndings have shown considerable association of psychopathology with card...