Results 51 to 60 of about 16,021,980 (396)
Heart-Rate Variability—More than Heart Beats?
Frontiers in Public Health, 2017 Heart-rate variability (HRV) is frequently introduced as mirroring imbalances within the autonomous nerve system. Many investigations are based on the paradigm that increased sympathetic tone is associated with decreased parasympathetic tone and vice ...
Gernot Ernst
doaj +1 more source
The role of inhibitory G proteins and regulators of G protein signaling in the in vivo control of heart rate and predisposition to cardiac arrhythmias [PDF]
, 2012 Inhibitory heterotrimeric G proteins and the control of heart rate. The activation of cell signaling pathways involving inhibitory heterotrimeric G proteins acts to slow the heart rate via modulation of ion channels.
Ang, R, Opel, A, Tinker, A
core +1 more source
Effect of selective heart rate slowing in heart failure with preserved ejection fraction [PDF]
, 2015 Background Heart failure with preserved ejection fraction (HFpEF) is associated with significant morbidity and mortality but is currently refractory to therapy.
Ashrafian, Houman +12 more
core +2 more sources
Science Advances, 2019 We show that glymphatic influx into the brain occurs in direct proportion to slow cortical activity and inversely to heart rate. The glymphatic system is responsible for brain-wide delivery of nutrients and clearance of waste via influx of cerebrospinal ...
L. Hablitz +7 more
semanticscholar +1 more source
Heart Rate Variability and Cognitive Function: A Systematic Review
Frontiers in Neuroscience, 2019 Background: Autonomic dysfunctions may precede the development of cognitive impairment, but the connection between these dimensions is unclear. This systematic review aims to analyze the relationship between heart rate variability (HRV) and cognitive ...
G. Forte, F. Favieri, M. Casagrande
semanticscholar +1 more source
Deep PPG: Large-Scale Heart Rate Estimation with Convolutional Neural Networks
Italian National Conference on Sensors, 2019 Photoplethysmography (PPG)-based continuous heart rate monitoring is essential in a number of domains, e.g., for healthcare or fitness applications. Recently, methods based on time-frequency spectra emerged to address the challenges of motion artefact ...
Attila Reiss +3 more
semanticscholar +1 more source
The role of fibroblast growth factors in cell and cancer metabolism
FEBS Letters, EarlyView.Fibroblast growth factor (FGF) signaling regulates crucial signaling cascades that promote cell proliferation, survival, and metabolism. Therefore, FGFs and their receptors are often dysregulated in human diseases, including cancer, to sustain proliferation and rewire metabolism.
Jessica Price, Chiara Francavilla
wiley +1 more source
Heart-rate pulse-shift detector [PDF]
, 1974 Detector circuit accurately separates and counts phase-shift pulses over wide range of basic pulse-rate frequency, and also provides reasonable representation of full repetitive EKG waveform.
Anderson, M.
core +1 more source
A model of heart rate kinetics in response to exercise
, 2008 We present a mathematical model, in the form of two coupled ordinary differential equations, for the heart rate kinetics in response to exercise. Our heart rate model is an adaptation of the model of oxygen uptake kinetics of Stirling: a physiological ...
Refoyo Román, Ignacio +3 more
core +1 more source
Hematopoietic (stem) cells—The elixir of life?
FEBS Letters, EarlyView.The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo +4 more
wiley +1 more source