Results 31 to 40 of about 933 (148)

Using imaging photoplethysmography for heart rate estimation in non-human primates. [PDF]

PLoS ONE, 2018
For humans and for non-human primates heart rate is a reliable indicator of an individual's current physiological state, with applications ranging from health checks to experimental studies of cognitive and emotional state.
Anton M Unakafov, Sebastian Möller, Igor Kagan, Alexander Gail, Stefan Treue, Fred Wolf   +5 more
doaj   +1 more source

Imaging photoplethysmography as an easy-to-use tool for monitoring changes in tissue blood perfusion during abdominal surgery

Scientific Reports, 2022
Evaluation of tissue perfusion at various stages of surgery is of great importance for the implementation of the concept of safe surgery, including operations on the abdominal organs. Currently, there is no accurate and reliable intraoperative method for
Alexei A. Kamshilin, Valery V. Zaytsev, Alexander V. Lodygin, Victor A. Kashchenko   +3 more
doaj   +1 more source

Noninvasive Non-Contact SpO₂ Monitoring Using an Integrated Polarization-Sensing CMOS Imaging Sensor

Sensors, 2022
Background:In the diagnosis and primary health care of an individual, estimation of the pulse rate and blood oxygen saturation (SpO2) is critical. The pulse rate and SpO2 are determined by methods including photoplethysmography (iPPG), light spectroscopy,
Mukul Sarkar, Maher Assaad
doaj   +1 more source

Supplementary document for Rational selection of RGB channels for disease classification based on IPPG technology - 5708633.pdf

, 2022
Additional two IPPG signals from each of the three categories of subjects as ...
Jing Yuan (217967), Ming Liu (105953), Mei Hui (12136689), Yuejin Zhao (8446515), Yuebin Zhao (12136692), Liquan Dong (12136686), lingqin Kong (12136695), Ge Xu (116917)   +7 more
core   +1 more source

Frame Registration for Motion Compensation in Imaging Photoplethysmography

Sensors, 2018
Imaging photoplethysmography (iPPG) is an emerging technology used to assess microcirculation and cardiovascular signs by collecting backscattered light from illuminated tissue using optical imaging sensors.
Dmitry Iakovlev, Sijung Hu, Vincent Dwyer   +2 more
doaj   +1 more source

A genome-wide association study of the longitudinal course of executive functions

Translational Psychiatry, 2021
Executive functions are metacognitive capabilities that control and coordinate mental processes. In the transdiagnostic PsyCourse Study, comprising patients of the affective-to-psychotic spectrum and controls, we investigated the genetic basis of the ...
Bernadette Wendel, Sergi Papiol, Till F. M. Andlauer, Jörg Zimmermann, Jens Wiltfang, Carsten Spitzer, Fanny Senner, Eva C. Schulte, Max Schmauß, Sabrina K. Schaupp, Jonathan Repple, Eva Reininghaus, Jens Reimer, Daniela Reich-Erkelenz, Nils Opel, Igor Nenadić, Susanne Meinert, Carsten Konrad, Farahnaz Klöhn-Saghatolislam, Tilo Kircher, Janos L. Kalman, Georg Juckel, Andreas Jansen, Markus Jäger, Maria Heilbronner, Martin von Hagen, Katrin Gade, Christian Figge, Andreas J. Fallgatter, Detlef E. Dietrich, Udo Dannlowski, Ashley L. Comes, Monika Budde, Bernhard T. Baune, Volker Arolt, Ion-George Anghelescu, Heike Anderson-Schmidt, Kristina Adorjan, Peter Falkai, Thomas G. Schulze, Heike Bickeböller, Urs Heilbronner   +41 more
doaj   +1 more source

Effect of iPPG processing.

, 2018
(A) Raw iPPG extracted using G-R method from the video of Session 1, (B) iPPG after band-pass filtering, (C) iPPG after wavelet filtering.
Stefan Treue (846470), Alexander Gail (76472), Igor Kagan (244543), Anton M. Unakafov (5706560), Sebastian Möller (5706563), Fred Wolf (120189)   +5 more
core   +1 more source

Kalpra: A kernel approach for longitudinal pathway regression analysis integrating network information with an application to the longitudinal PsyCourse Study

Frontiers in Genetics, 2022
A popular approach to reduce the high dimensionality resulting from genome-wide association studies is to analyze a whole pathway in a single test for association with a phenotype.
Bernadette Wendel, Markus Heidenreich, Monika Budde, Maria Heilbronner, Mojtaba Oraki Kohshour, Sergi Papiol, Sergi Papiol, Peter Falkai, Thomas G. Schulze, Thomas G. Schulze, Thomas G. Schulze, Urs Heilbronner, Heike Bickeböller   +12 more
doaj   +1 more source

iPPG extraction from near-infrared video.

, 2018
(A) Raw iPPG extracted from the video of Session 9 (compare with Fig 4A) and (B) amplitude spectrum densities of the iPPG signal 55-75 s (compare with Fig 3).
Stefan Treue (846470), Alexander Gail (76472), Igor Kagan (244543), Anton M. Unakafov (5706560), Sebastian Möller (5706563), Fred Wolf (120189)   +5 more
core   +1 more source

Algorithms for Monitoring Heart Rate and Respiratory Rate From the Video of a User’s Face

IEEE Journal of Translational Engineering in Health and Medicine, 2018
Smartphone cameras can measure heart rate (HR) by detecting pulsatile photoplethysmographic (iPPG) signals from post-processing the video of a subject's face. The iPPG signal is often derived from variations in the intensity of the green channel as shown
Shourjya Sanyal, Koushik Kumar Nundy
doaj   +1 more source