Results 51 to 60 of about 58,493 (121)
Regenerative Therapy, 2022 Introduction: Dysfunction of the sinoatrial node (SAN) cells causes arrhythmias, and many patients require artificial cardiac pacemaker implantation. However, the mechanism of impaired SAN automaticity remains unknown, and the generation of human SAN ...
Takayuki Wakimizu +9 more
doaj
Analysis of Heterogeneous Cardiac Pacemaker Tissue Models and Traveling Wave Dynamics [PDF]
arXiv, 2018 The sinoatrial-node (SAN) is a complex heterogeneous tissue that generates a stable rhythm in healthy hearts, yet a general mechanistic explanation for when and how this tissue remains stable is lacking. Although computational and theoretical analyses could elucidate these phenomena, such methods have rarely been used in realistic (large-dimensional ...
arxiv
Pesquisa Veterinária Brasileira, 2013 Utilizamos nesta pesquisa 40 corações de cães adultos, machos e fêmeas, de idades variadas, que não portavam nenhuma afecção cardíaca. Os corações tiveram as artérias coronárias injetadas, separadamente, com Neoprene Látex 450, corado com pigmento ...
Caio Biasi +6 more
doaj
Identifying Cheating Anchor Nodes using Maximum Likelihood and Mahalanobis Distance [PDF]
arXiv, 2014 Malicious anchor nodes will constantly hinder genuine and appropriate localization. Discovering the malicious or vulnerable anchor node is an essential problem in Wireless Sensor Networks (WSNs). In wireless sensor networks, anchor nodes are the nodes that know its current location.
arxiv
Analysis of Maximum Likelihood and Mahalanobis Distance for Identifying Cheating Anchor Nodes [PDF]
arXiv, 2014 Malicious anchor nodes will constantly hinder genuine and appropriate localization. Discovering the malicious or vulnerable anchor node is an essential problem in wireless sensor networks (WSNs). In wireless sensor networks, anchor nodes are the nodes that know its current location.
arxiv
Joint Use of Node Attributes and Proximity for Semi-Supervised Classification on Graphs [PDF]
arXiv, 2020 The task of node classification is to infer unknown node labels, given the labels for some of the nodes along with the network structure and other node attributes. Typically, approaches for this task assume homophily, whereby neighboring nodes have similar attributes and a node's label can be predicted from the labels of its neighbors or other ...
arxiv
Characterization of Driver Nodes of Anti-Stable Networks [PDF]
arXiv, 2014 A controllable network can be driven from any initial state to any desired state using driver nodes. A set of driver nodes to control a network is not unique. It is important to characterize these driver nodes and select the right driver nodes. The work discusses theory and algorithms to select driver node such that largest region of attraction can be ...
arxiv
Journal of Pharmacological Sciences, 2004 Cilnidipine, a dihydropyridine Ca2+ channel antagonist, is known to have inhibitory effects on both L- and N-type Ca2+ currents. In the present study, we examined the effect of cilnidipine on myocardial L- and T-type Ca2+ currents and sinoatrial node ...
Kentaro Takeda +4 more
doaj
Rhythm Generating Mechanisms in Rat Sinoatrial Node
Current Medical IssuesBackground: The major membrane currents responsible for sinoatrial (SA) rhythm generation are generally studied in isolated cardiac cells using electrophysiological tools. Such studies are resource and labor-intensive.
Jesi Charles +7 more
doaj +1 more source
Rare Case of Rapidly Worsening REM Sleep Induced Bradycardia
Case Reports in Cardiology, 2015 Sinoatrial arrest also known as sinus pause occurs when sinoatrial node of the heart transiently ceases to generate the electrical impulse necessary for the myocardium to contract. It may last from 2.0 seconds to several minutes. Etiologies of sinoatrial
Ayyappa S. Duba +6 more
doaj +1 more source