Results 11 to 20 of about 380,256 (141)
Real-time Webcam Heart-Rate and Variability Estimation with Clean Ground Truth for Evaluation [PDF]
Applied Sciences. 2020; 10(23):8630, 2020 Remote photo-plethysmography (rPPG) uses a camera to estimate a person's heart rate (HR). Similar to how heart rate can provide useful information about a person's vital signs, insights about the underlying physio/psychological conditions can be obtained from heart rate variability (HRV).
arxiv +1 more source
Clinical Cardiology, 1990 AbstractReduced heart rate variability carries an adverse prognosis in patients who have survived an acute myocardial infarction. This article reviews the physiology, technical problems of assessment, and clinical relevance of heart rate variability.
Marek Malik, A. J. Camm
openaire +3 more sources
Heart rate variability analysis [PDF]
Acta Physiologica Hungarica, 2001 The expansion of heart rate variability analysis has been facilitated by the remarkable development of computer sciences and digital signal processing during the last thirty years. The beat-to-beat fluctuation of the heart rate originates from the momentary summing of sympathetic and parasympathetic influences on the sinus node.
Hejjel, L., Gál, I.
openaire +4 more sources
Heart Rate Variability and Exceptional Longevity [PDF]
Frontiers in Physiology, 2020 Centenarians are the paradigm of human extreme longevity and healthy aging, because they have postponed, if not avoided, mayor age-related diseases. The purpose of this study was to investigate potential differences in resting heart rate variability (HRV) between young adults, octogenarians, and centenarians and assess whether HRV variables are ...
Adrián Hernández-Vicente +19 more
openaire +8 more sources
Determinants of heart rate variability
Journal of the American College of Cardiology, 1996 This study sought to examine clinical determinants of heart rate variability and to report normative reference values for eight heart rate variability measures.Although the clinical implications of heart rate variability have been described, clinical determinants and normative values of heart rate variability measures have not been studied ...
Hisako Tsuji +6 more
openaire +3 more sources
Scaling graphs of heart rate time series in athletes demonstrate the VLF, LF and HF regions [PDF]
2006 Physiol. Meas. 27 N35-N39, 2006 Scaling analysis of heart rate time series has emerged as an useful tool for assessment of autonomic cardiac control. We investigate the heart rate time series of ten athletes (five males and five females), by applying detrended fluctuation analysis (DFA).
arxiv +1 more source
Real-Time Monitoring of User Stress, Heart Rate and Heart Rate Variability on Mobile Devices [PDF]
arXiv, 2022 Stress is considered to be the epidemic of the 21st-century. Yet, mobile apps cannot directly evaluate the impact of their content and services on user stress. We introduce the Beam AI SDK to address this issue. Using our SDK, apps can monitor user stress through the selfie camera in real-time. Our technology extracts the user's pulse wave by analyzing
arxiv
A Self-Supervised Algorithm for Denoising Photoplethysmography Signals for Heart Rate Estimation from Wearables [PDF]
arXiv, 2023 Smart watches and other wearable devices are equipped with photoplethysmography (PPG) sensors for monitoring heart rate and other aspects of cardiovascular health. However, PPG signals collected from such devices are susceptible to corruption from noise and motion artifacts, which cause errors in heart rate estimation.
arxiv
Heart Rate Variability in Newborns
Physiological Research, 2017 Heart rate (HR) and heart rate variability (HRV) in newborns is influenced by genetic determinants, gestational and postnatal age, and other variables. Premature infants have a reduced HRV. In neonatal HRV evaluated by spectral analysis, a dominant activity can be found in low frequency (LF) band (combined parasympathetic and sympathetic component ...
Mirko Zibolen +6 more
openaire +3 more sources
Circadian rhythm of heart rate and heart rate variability [PDF]
Archives of Disease in Childhood, 2000 Measurements of heart rate variability (HRV) are increasingly used as markers of cardiac autonomic activity.To examine circadian variation in heart rate and HRV in children.A total of 57 healthy infants and children, aged 2 months to 15 years, underwent ambulatory 24 hour Holter recording.
Krystel Maeyns +4 more
openaire +3 more sources