Results 71 to 80 of about 25,281 (243)

An Interpretable Machine Vision Approach to Human Activity Recognition using Photoplethysmograph Sensor Data [PDF]

, 2018
The current gold standard for human activity recognition (HAR) is based on the use of cameras. However, the poor scalability of camera systems renders them impractical in pursuit of the goal of wider adoption of HAR in mobile computing contexts ...
Brophy, Eoin, Smeaton, Alan F., Veiga, José Juan Dominguez, Wang, Zhengwei, Ward, Tomas E.   +4 more
core   +1 more source

Dynamic Mode Decomposition (DMD) for Low‐Latency Real‐Time Cardiac MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To demonstrate dynamic mode decomposition (DMD) for high spatiotemporal low‐latency online reconstruction in 2D real‐time cardiac MRI. Methods DMD was applied to 2D spiral balanced steady state free precession (bSSFP) real‐time adult and fetal cardiac MRI at 0.55 T, with data from 10 healthy adult volunteers (3F/7M; age: 21–49; BMI: 20–
Ecrin Yagiz, Bilal Tasdelen, Ibrahim K. Ozaslan, Mihailo R. Jovanovic, Ye Tian, Krishna S. Nayak   +5 more
wiley   +1 more source

Association Between Cognitive Function and the Autonomic Nervous System by Photoplethysmography

Bioengineering
This study explored the relationship between cognitive function and the autonomic nervous system by categorizing participants into two groups based on their cognitive function scores in each domain of the SNSB-D: a High Cognitive Performance (HCP) group ...
Jaewook Jin, Kahye Kim, KunHo Lee, Jeong-Woo Seo, Jaeuk U. Kim   +4 more
doaj   +1 more source

Application of Photoplethysmography for Vascular Health Assessment in Healthy Individuals: A Novel Methodology [PDF]

Journal of Bioscience and Applied Research
The research investigates using photoplethysmography (PPG) for assessing endothelial function, crucial in understanding cardiovascular diseases. Factors such as smoking, high blood pressure, cholesterol, obesity, and diabetes significantly affect ...
Suha Muneam
doaj   +1 more source

Intestinal perfusion monitoring using photoplethysmography [PDF]

Journal of Biomedical Optics, 2013
In abdominal trauma patients, monitoring intestinal perfusion and oxygen consumption is essential during the resuscitation period. Photoplethysmography is an optical technique potentially capable of monitoring these changes in real time to provide the medical staff with a timely and quantitative measure of the adequacy of resuscitation.
Tony J, Akl, Mark A, Wilson, M Nance, Ericson, Gerard L, Coté   +3 more
openaire   +2 more sources

Sympatho‐Excitation in Pulmonary Hypertension: The Potential Role of Pulmonary Arterial Baroreceptors: An Acute Physiologic Intervention Study

Respirology, EarlyView.
Pulmonary arterial baroreceptors reflexively stimulate sympathetic nerve activity (SNA) in response to elevated pulmonary artery pressure and distension. In pulmonary hypertension patients, changes in muscle SNA were proportional to changes in pulmonary haemodynamics following nebulised iloprost.
Michael J. Plunkett, Ana L. C. Sayegh, Robert A. Lewis, Tanya J. McWilliams, Sasiharan Sithamparanathan, Julian F. R. Paton, James P. Fisher   +6 more
wiley   +1 more source

A Novel Nonlinear Method for Cardiovascular Data Synchronization

IEEE Access
This study introduces and evaluates a novel nonlinear technique for synchronizing electrocardiogram (ECG) and photoplethysmogram (PPG) signals by embracing the intrinsic relationship between heart rate variability (HRV) and pulse rate variability (PRV ...
Daniele Padovano, Arturo Martinez-Rodrigo, Norbert Marwan, Santiago Mula Munoz, Jose J. Rieta, Raul Alcaraz   +5 more
doaj   +1 more source

Estimating Carotid Pulse and Breathing Rate from Near-infrared Video of the Neck

, 2018
Objective: Non-contact physiological measurement is a growing research area that allows capturing vital signs such as heart rate (HR) and breathing rate (BR) comfortably and unobtrusively with remote devices.
Chen, Weixuan, Hernandez, Javier, Picard, Rosalind W.   +2 more
core   +1 more source

Role of novel automated methods in pulse signal analysis to screen for sleep‐disordered breathing among patients on chronotropic medications

Sleep Research, EarlyView.
Abstract Study objectives To investigate the use of automated analysis to detect heart rate accelerations (HRAs) to screen for sleep‐disordered breathing (SDB) among patients who use chronotropic medications. Methods Nocturnal polysomnography (NPSG) recordings from 933 participants in the Sleep Heart Health Study were analyzed using an automated method
Nabila Ahmed, Moustafa Habra, Raya Nashef, Scott Maresh, Abed Najjar, Shivapriya Chandu, Adhithi Athikumar, Omar Ismail, Laurel A. Ravelo, Paul E. Peppard, M. Safwan Badr, Abdulghani Sankari   +11 more
wiley   +1 more source

Fully Automated Photoplethysmography-Based Wearable Atrial Fibrillation Screening in a Hospital Setting

Diagnostics
Background/Objectives: Atrial fibrillation (AF) remains a major risk factor for stroke. It is often asymptomatic and paroxysmal, making it difficult to detect with conventional electrocardiography (ECG).
Khaled Abdelhamid, Pamela Reissenberger, Diana Piper, Nicole Koenig, Bianca Hoelz, Julia Schlaepfer, Simone Gysler, Helena McCullough, Sebastian Ramin-Wright, Anna-Lena Gabathuler, Jahnvi Khandpur, Milene Meier, Jens Eckstein   +12 more
doaj   +1 more source