Results 41 to 50 of about 172,620 (346)
, 2014 Purpose: this study investigated how the vasoconstriction induced by vibration depends on the frequency of vibration when the vibration magnitude is defined by individual thresholds for perceiving vibration [i.e.
Griffin, Michael J., Ye, Ying
core +1 more source
Opposing Roles of S1P3 Receptors in Myocardial Function
Cells, 2020 Sphingosine-1-phosphate (S1P) is a lysophospholipid mediator with diverse biological function mediated by S1P1–5 receptors. Whereas S1P was shown to protect the heart against ischemia/reperfusion (I/R) injury, other studies highlighted its ...
Dina Wafa +7 more
doaj +1 more source
Hessian filter-assisted full diameter at half maximum (FDHM) segmentation and quantification method for optical-resolution photoacoustic microscopy [PDF]
arXiv, 2022 Optical-resolution photoacoustic microscopy has been validated as a high-resolution and high-sensitivity imaging modality for angiographic studies in the past decades. Quantitative vascular analysis reveals critical information of physiological changes, where vessel segmentation is the key step.
arxiv
Skin blood flow changes during apneic spells in preterm infants [PDF]
, 1989 Changes in skin blood flow during apneic spells were determined in 18 preterm infants using a diode laser Doppler flow meter without light conducting fibres.
Aarnoudse, J.G. +5 more
core +2 more sources
Serotonin reuptake inhibitors and cardiovascular disease [PDF]
, 2005 Selective serotonin re-uptake inhibiting drugs (SSRIs) are widely used for endogenous depression. In addition to depleting the nerve terminals of serotonin they also lower blood platelet serotonin levels.
Belcher, P.R. +2 more
core +1 more source
Vasoconstriction by Noradrenaline in the Brain [PDF]
Nature New Biology, 1973 IN view of the present controversy, recently voiced in your journal1–3 and elsewhere4,5, concerning a significant vasoconstrictor action of noradrenaline (NA) applied microiontophoretically in the brain, it seems worth pointing out that the required experiments, that is direct applications of NA to cerebral vessels in cats, have been performed by ...
openaire +3 more sources
Physiological Reports, 2019 Upright tilt table testing has been used to test for vasovagal syncope (VVS) but can result in “false positives” in which tilt‐induced fainting (tilt+) occurs in the absence of real‐world fainting.
Julian M. Stewart +6 more
doaj +1 more source
Scalable Simulation of Realistic Volume Fraction Red Blood Cell Flows through Vascular Networks [PDF]
, 2019 High-resolution blood flow simulations have potential for developing better understanding biophysical phenomena at the microscale, such as vasodilation, vasoconstriction and overall vascular resistance. To this end, we present a scalable platform for the simulation of red blood cell (RBC) flows through complex capillaries by modeling the physical ...
arxiv +1 more source
Quality Assessment of Photoplethysmography Signals For Cardiovascular Biomarkers Monitoring Using Wearable Devices [PDF]
arXiv, 2023 Photoplethysmography (PPG) is a non-invasive technology that measures changes in blood volume in the microvascular bed of tissue. It is commonly used in medical devices such as pulse oximeters and wrist worn heart rate monitors to monitor cardiovascular hemodynamics.
arxiv
Neural regulation of cardiovascular response to exercise: role of central command and peripheral afferents [PDF]
, 2014 During dynamic exercise, mechanisms controlling the cardiovascular apparatus operate to provide adequate oxygen to fulfill metabolic demand of exercising muscles and to guarantee metabolic end-products washout.
Crisafulli, A +5 more
core +4 more sources