Results 121 to 130 of about 1,748,185 (170)

Study of cerebrovascular reactivity to hypercapnia by imaging photoplethysmography to develop a method for intraoperative assessment of the brain functional reserve. [PDF]

Biomed Opt Express, 2022
Volynsky MA, Mamontov OV, Osipchuk AV, Zaytsev VV, Sokolov AY, Kamshilin AA.   +5 more
europepmc   +1 more source

The Electrocardiogram‐Based Phase Adjustment Task (PAT‐ECG): An Open‐Access Laboratory Test of Cardiac Interoceptive Accuracy

Psychophysiology, Volume 63, Issue 10, October 2026.
ABSTRACT Interoceptive accuracy plays a central role in theories of emotion, and atypical interoceptive accuracy is increasingly recognized as a feature in the pathophysiology of multiple clinical and subclinical conditions. However, existing methods for assessing interoceptive accuracy have limitations that may constrain research progress.
James Hodgetts, Germano Gallicchio, Shaun Mckiernan, Christopher Ring, Jennifer Murphy, Andrew Cooke   +5 more
wiley   +1 more source

High angular resolution diffusion imaging (HARDI) of porcine menisci: a comparison of diffusion tensor imaging and generalized q-sampling imaging

Background: Diffusion magnetic resonance imaging (MRI) allows for the quantification of water diffusion properties in soft tissues. The goal of this study was to characterize the 3D collagen fiber network in the porcine meniscus using high angular ...
Zhao, Qi, Holt, Abigail, Spritzer, Charles E., McNulty, Amy L., Wang, Nian, DeFrate, Louis E.   +5 more
core   +1 more source

Visualizing Membranes : 3D Electron Microscopic Imaging of Cellular Structures [PDF]

, 2009
Cells are organized in a highly complex manner. And while there are many different types of cells - each organized in a different manner according to their function - they do share certain commonalities.
Sub Biomolecular Imaging, Biomolecular Imaging, Lebbink, M.N.   +2 more
core   +1 more source

Comparative study on the effect of color spaces and color formats on heart rate measurement using the imaging photoplethysmography (IPPG) method. [PDF]

Technol Health Care, 2022
Zhang C, Tian J, Li D, Hou X, Wang L.
europepmc   +1 more source

Splenic contraction associated with sudden, transient hypotension and sympathoexcitation in humans

Experimental Physiology, Volume 111, Issue 10, Page 4368-4381, 1 October 2026.
Abstract The spleen is traditionally recognised for its roles in immunity and blood filtration, and it is known to contract and release stored erythrocytes in hypoxic conditions. Recent findings suggest that the spleen may also contribute to cardiovascular regulation.
Angelica Lodin‐Sundström, Gabriel Axelsson, Lisa Ljungberg, Mats H. Linér, Bodil Sjögreen, Johan P. A. Andersson   +5 more
wiley   +1 more source

Robust non-contact peripheral oxygenation saturation measurement using smartphone-enabled imaging photoplethysmography. [PDF]

Biomed Opt Express, 2021
Sun Z, He Q, Li Y, Wang W, Wang RK.
europepmc   +1 more source

Association of remote imaging photoplethysmography and cutaneous perfusion in volunteers. [PDF]

Sci Rep, 2020
Rasche S, Huhle R, Junghans E, de Abreu MG, Ling Y, Trumpp A, Zaunseder S.   +6 more
europepmc   +1 more source

Measuring Pulse Rate Variability During Motion Artifact with a Non-Contact, Multi-Imager Photoplethysmography System [PDF]

, 2015
Non-contact imaging photoplethysmography is an exciting new field based on the principles of traditional photoplethysmography where viable signals can now be acquired without the use of contact equipment.
Kiehl, Zachary Adam
core  

Animal model of assessing cerebrovascular functional reserve by imaging photoplethysmography. [PDF]

Sci Rep, 2020
Mamontov OV, Sokolov AY, Volynsky MA, Osipchuk AV, Zaytsev VV, Romashko RV, Kamshilin AA.   +6 more
europepmc   +1 more source