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Heart Rate Variability (HRV) measures the variation of the time between consecutive heartbeats and is a major indicator of physical and mental health. Recent research has demonstrated that photoplethysmography (PPG) sensors can be used to…

Machine Learning · Computer Science 2023-03-27 Yuntong Zhang , Jingye Xu , Mimi Xie , Dakai Zhu , Houbing Song , Wei Wang

Continuous, ubiquitous monitoring through wearable sensors has the potential to collect useful information about users' context. Heart rate is an important physiologic measure used in a wide variety of applications, such as fitness tracking…

Machine Learning · Computer Science 2019-12-20 Nutta Homdee , Mehdi Boukhechba , Yixue W. Feng , Natalie Kramer , John Lach , Laura E. Barnes

Heart rate variability (HRV) is a practical and noninvasive measure of autonomic nervous system activity, which plays an essential role in cardiovascular health. However, using HRV to assess physiology status is challenging. Even in…

Signal Processing · Electrical Eng. & Systems 2022-03-24 Jiacheng Zhu , Gregory Darnell , Agni Kumar , Ding Zhao , Bo Li , Xuanlong Nguyen , Shirley You Ren

Thermal comfort is an assessment of one's satisfaction with the surroundings; yet, most mechanisms that are used to provide thermal comfort are based on approaches that preclude physiological, psychological, and personal psychophysics that…

Signal Processing · Electrical Eng. & Systems 2020-05-22 Kizito Nkurikiyeyezu , Yuta Suzuki , Guillaume Lopez

Conventional methods for diagnosing Social Anxiety Disorder (SAD), such as clinical interviews and self-reported questionnaires, often face accessibility barriers and subjective biases, underscoring the need for objective physiological…

Human-Computer Interaction · Computer Science 2025-12-02 Nilesh Kumar Sahu , Snehil Gupta , Haroon R. Lone

We consider the problem of modeling cardiovascular responses to physical activity and sleep changes captured by wearable sensors in free living conditions. We use an attentional convolutional neural network to learn parsimonious signatures…

Machine Learning · Computer Science 2018-12-06 Haraldur T. Hallgrímsson , Filip Jankovic , Tim Althoff , Luca Foschini

With the soaring adoption of in-ear wearables, the research community has started investigating suitable in-ear heart rate (HR) detection systems. HR is a key physiological marker of cardiovascular health and physical fitness. Continuous…

Human-Computer Interaction · Computer Science 2023-04-25 Kayla-Jade Butkow , Ting Dang , Andrea Ferlini , Dong Ma , Cecilia Mascolo

The technological advancement in wireless health monitoring through the direct contact of the skin allows the development of light-weight wrist-worn wearable devices to be equipped with different sensors such as photoplethysmography (PPG)…

Thermal comfort is a personal assessment of one's satisfaction with the surroundings. Yet, most thermal comfort delivery mechanisms preclude physiological and psychological precursors to thermal comfort. Accordingly, many people feel either…

Other Quantitative Biology · Quantitative Biology 2020-02-19 Kizito Nkurikiyeyezu , Yuta Suzuki , Yoshito Tobe , Guillaume Lopez , Kiyoshi Itao

Heart rate variability (HRV), defined as the variability between consecutive heartbeats, is a surrogate measure of cardiac vagal tone. It is widely accepted that a decreased HRV is associated to several risk factors and cardiovascular…

Medical Physics · Physics 2021-05-20 Stefania Scarsoglio , Luca Ridolfi

Heart rate recovery (HRR) within the initial minute following exercise is a widely utilized metric for assessing cardiac autonomic function in individuals and predicting mortality risk in patients with cardiovascular disease. However,…

Signal Processing · Electrical Eng. & Systems 2025-03-31 Ziheng Mao , Yuan He , Jia Zhang , Yimiao Sun , Yadong Xie , Xiuzhen Guo

Since stress contributes to a broad range of mental and physical health problems, the objective assessment of stress is essential for behavioral and physiological studies. Although several studies have evaluated stress levels in controlled…

Machine Learning · Computer Science 2021-08-03 Ali Tazarv , Sina Labbaf , Stephanie M. Reich , Nikil Dutt , Amir M. Rahmani , Marco Levorato

Smartwatches (SWs) can continuously and autonomously monitor vital signs, including heart rates and physical activities involving wrist movement. The monitoring capability of SWs has several key health benefits arising from their role in…

Human-Computer Interaction · Computer Science 2022-11-17 Fatemeh Karimi , Zohre Amoozgar , Reza Reiazi , Mehdi Hosseinzadeh , Reza Rawassizadeh

Lifelogging has become a prominent research topic in recent years. Wearable sensors like Fitbits and smart watches are now increasingly popular for recording ones activities. Some researchers are also exploring keystroke dynamics for…

Human-Computer Interaction · Computer Science 2021-11-18 Srijith Unni , Sushma Suryanarayana Gowda , Alan F. Smeaton

Smartwatches have become popular for monitoring physiological parameters outside clinical settings. Using reflective photoplethysmography (PPG) sensors, such watches can non-invasively estimate heart rate (HR) in everyday environments and…

Signal Processing · Electrical Eng. & Systems 2024-12-24 Manuel Meier , Christian Holz

In many pediatric fMRI studies, cardiac signals are often missing or of poor quality. A tool to extract Heart Rate Variation (HRV) waveforms directly from fMRI data, without the need for peripheral recording devices, would be highly…

Image and Video Processing · Electrical Eng. & Systems 2025-02-12 Abdoljalil Addeh , Karen Ardila , Rebecca J Williams , G. Bruce Pike , M. Ethan MacDonald

Longitudinal monitoring of heart rate (HR) and heart rate variability (HRV) can aid in tracking cardiovascular diseases (CVDs), sleep quality, sleep disorders, and reflect autonomic nervous system activity, stress levels, and overall…

Signal Processing · Electrical Eng. & Systems 2024-12-20 Ruhan Yi , Mihail Popescu , James M. Keller , Grant Scott , Laurel Despins , David Heise , Marjorie Skubic

Adaptive Virtual Reality (VR) systems have the potential to enhance training and learning experiences by dynamically responding to users' cognitive states. This research investigates how eye tracking and heart rate variability (HRV) can be…

Human-Computer Interaction · Computer Science 2025-04-10 Mahsa Nasri

The diagnosis of heart diseases is a difficult task generally addressed by an appropriate examination of patients clinical data. Recently, the use of heart rate variability (HRV) analysis as well as of some machine learning algorithms, has…

Understanding physiological responses during running is critical for performance optimization, tailored training prescriptions, and athlete health management. We introduce a comprehensive framework -- what we believe to be the first capable…

Machine Learning · Computer Science 2025-05-02 Barak Gahtan , Sanketh Vedula , Gil Samuelly Leichtag , Einat Kodesh , Alex M. Bronstein
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