Results 81 to 90 of about 7,515 (209)

Timing is everything: Expert opinion on researching epilepsy rhythms by the ILAE Task Force on Chronobiology

Epilepsia, EarlyView.
Abstract Recurrent seizures, the hallmark of epilepsy, are influenced by rhythms operating over multiple timescales. Chronobiology is the study of biological timing that aims to explain temporal patterns of events like seizures. Fueled by recent advances in genetics, computational modeling, and device engineering, the chronobiology of epilepsy is now a
Maxime O. Baud, Christophe Bernard, Birgit Frauscher, Philippa J. Karoly, Vikram R. Rao   +4 more
wiley   +1 more source

Camera-based spatial assessment of perfusion upon stimuli

Current Directions in Biomedical Engineering, 2019
Imaging photoplethysmography allows to capture spatio-temporal patterns related to the perfusion. One such approach is based on the analysis of the time delay between pulse waves at different locations by so-called phase maps. There are different ways to
Fleischhauer Vincent, Ruprecht Nora, Zaunseder Sebastian   +2 more
doaj   +1 more source

ASSESSMENT OF CUTANEOUS BLOOD FLOW IN LOWER EXTREMITIES BY IMAGING PHOTOPLETHYSMOGRAPHY METHOD [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2019
Subject of Research. The paper presents effective application of the novel imaging photoplethysmography method for receiving data on reaction of peripheral blood flow in lower extremities on venous occlusion. Method.
Valeriy V. Zaytsev, Oleg V. Mamontov, Alexey A. Kamshilin   +2 more
doaj   +1 more source

Artificial intelligence for adaptive neuromodulation in drug‐resistant epilepsy

Epilepsia, EarlyView.
Abstract Drug‐resistant epilepsy (DRE) affects nearly one third of people with epilepsy and is associated with substantial cognitive, psychiatric, and mortality burdens. For patients who are not candidates for resection or laser interstitial thermal therapy, neuromodulation therapies such as vagus nerve stimulation, deep brain stimulation, and ...
Amir Hossein Daraie, Arianna Damiani, Mahsa Khoshkhou, Luis A. Sanchez, Rachel J. Smith, Shruti H. Agashe, Jorge A. Gonzalez‐Martinez, Jennifer Hopp, Adam S. Charles, Sridevi V. Sarma, Joon‐Yi Kang   +10 more
wiley   +1 more source

Perfusion assessment in rat spinal cord tissue using photoplethysmography and laser Doppler flux measurements [PDF]

, 2013
Animal models are widely used to investigate the pathological mechanisms of spinal cord injury (SCI), most commonly in rats. It is well known that compromised blood flow caused by mechanical disruption of the vasculature can produce irreversible damage ...
Cibert-Goton, V., Langford, R. M., Phillips, J. P., Shortland, P. J.   +3 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

Time-Series U-Net With Recurrence for Noise-Robust Imaging Photoplethysmography

IEEE Access
Remote estimation of vital signs enables health monitoring for situations in which contact-based devices are either not available, too intrusive, or too expensive. In this paper, we present a modular pipeline for pulse signal estimation from video of the
Vineet R. Shenoy, Shaoju Wu, Armand Comas, Suhas Lohit, Hassan Mansour, Tim K. Marks   +5 more
doaj   +1 more source

Peripheral arterial disease: diagnostic challenges and how photoplethysmography may help [PDF]

, 2015
Peripheral arterial disease (PAD) affects approximately 20% of patients aged ≥60 years.1 A GP with an average list size of 1800 patients can expect to have 50–60 patients with PAD.
Allen, John, Haining, Shona, Sims, Andrew, Stansby, Gerard, Wilkes, Scott   +4 more
core   +1 more source

Portable Radar for Noncontact Heart Rate Monitoring and Estrus Detection in Dairy Cows

IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
This study introduces a portable radar system for real‐time monitoring of respiratory and heart rates in dairy cows. It uses millimeter‐wave Frequency Modulated Continuous Wave (FMCW) radar to perform noncontact physiological sensing, reducing behavioral disturbance. The radar system's design prioritizes portability, cost‐effectiveness, and robustness,
Yingxiu Li, Ranran Wang, Fuyang Tian, Yudao Li, Zhuolin Wang, Yuxin Yu, Liping Ma, Xin Lu   +7 more
wiley   +1 more source

Heart rate monitoring in ultra-high-field MRI using frequency information obtained from video signals of the human skin compared to electrocardiography and pulse oximetry

Current Directions in Biomedical Engineering, 2015
Videos of the human skin contain subtle color variations associated with the blood volume pulse. This remote photoplethysmography signal can be used for heart rate monitoring and represents an alternative to signals obtained from contact-based hardware ...
Spicher Nicolai, Maderwald Stefan, Ladd Mark E., Kukuk Markus   +3 more
doaj   +1 more source