Results 81 to 90 of about 6,479 (196)

Individuals with persisting post‐concussion symptoms with physiological subtype demonstrate altered cardiovascular and autonomic responses to face cooling

open access: yesExperimental Physiology, EarlyView.
Abstract Individuals with persisting post‐concussion symptoms with physiological subtype (PPCS‐P) demonstrate exercise intolerance due to exacerbation of concussion‐like symptoms during incremental exercise. We tested the hypothesis that individuals with PPCS‐P (n = 12) would have a blunted cardiac autonomic response to face cooling compared to healthy
Phillip J. Wallace   +6 more
wiley   +1 more source

Improved Remote Photoplethysmography Using Machine Learning-Based Filter Bank

open access: yesApplied Sciences
Remote photoplethysmography (rPPG) is a non-contact technology that monitors heart activity by detecting subtle color changes within the facial blood vessels.
Jukyung Lee, Hyosung Joo, Jihwan Woo
doaj   +1 more source

Continuous-Spectrum Infrared Illuminator for Camera-PPG in Darkness

open access: yesSensors, 2020
Many camera-based remote photoplethysmography (PPG) applications require sensing in near infrared (NIR). The performance of PPG systems benefits from multi-wavelength processing. The illumination source in such system is explored in this paper.
Wenjin Wang   +2 more
doaj   +1 more source

Transformative Approach for Heart Rate Prediction from Face Videos Using Local and Global Multi-Head Self-Attention

open access: yesTechnologies, 2023
Heart rate estimation from face videos is an emerging technology that offers numerous potential applications in healthcare and human–computer interaction. However, most of the existing approaches often overlook the importance of long-range spatiotemporal
Smera Premkumar   +3 more
doaj   +1 more source

Unsupervised skin tissue segmentation for remote photoplethysmography [PDF]

open access: yesPattern Recognition Letters, 2019
Abstract Segmentation is a critical step for many algorithms, especially for remote photoplethysmography (rPPG) applications as only the skin surface provides information. Moreover, it has been shown that the rPPG signal is not distributed homogeneously across the skin.
Bobbia, Serge   +4 more
openaire   +2 more sources

Advances in cardiac devices and bioelectronics augmented with artificial intelligence

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Interfaces between the human heart, diagnostic bioelectronics, artificial intelligence, and clinical care. From left to right: Human heart and biosensor interface; representative waveforms of common diagnostic bioelectronic sensing modalities.
Charles Stark   +3 more
wiley   +1 more source

A Neo-reflective Wrist Pulse Oximeter [PDF]

open access: yes, 2014
published_or_final_versio
Chao, M, Pang, GKH
core   +1 more source

Local blood flow analysis and visualization from RGB-video sequences

open access: yesCurrent Directions in Biomedical Engineering, 2019
The extraction of heart rate and other vital parameters from video recordings of a person has attracted much attention over the last years. In this paper, we examine time differences between distinct spatial regions using remote photoplethysmography ...
Kossack Benjamin   +4 more
doaj   +1 more source

Prediction of Heart Wellness Based on the Analysis of Skin Color

open access: yesEngineering Proceedings, 2023
Heart rate monitoring is crucial in scientific and technical fields as it provides essential information about cardiovascular health, exercise performance, and stress levels, enabling early detection of and intervention for potential cardiac ...
Kavya Sree Kammari   +2 more
doaj   +1 more source

Role of reactive oxygen species in mediating peripheral hypoxic vasodilation and sympathoexcitation at high altitude

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend High‐altitude acclimatisation increases muscle sympathetic nerve activity (MSNA) via activation of the arterial chemoreflex, pulmonary arterial baroreceptors and resetting of the sympathetic vascular baroreflex. However attempting to silence these mechanisms only partially normalises MSNA, implicating other contributory ...
Liam D. Corr   +15 more
wiley   +1 more source

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