Cardiac action potentialMembrane potential sensorMermaidQT-screenAction potentials are a basic and fast communication mode within or in between neuronal and muscular cells in the human body. The rhythmic initiation and structured propagation of action potentials in the heart are most essential for a ...
Action Potential Configuration in Heart Papillary Muscles from Female Rats in Different Thyroid States We have studied the effects of thyroidectomy and the in vivo administration of different triiodothyronine (T3) doses in thyroidectomized female rats on electrophysiological properties, measured in ... ...
In the heart,action potentialis moving from one heart muscle cell to another over the surface of the heart.───在心脏中,动作电位是在心脏表面从一个心肌细胞向另一个心肌细胞传递。 英语使用场景 Effect of electronic dental anesthesia on theaction potentialof the cat biventer induced by electronic...
Mathematical modelling and numerical simulation in cardiac electrophysiology have already been studied extensively. However, there is a clear lack of techniques and methodologies for studying the propagation of action potential in a heart with structural defects. In this article, we present a modified ...
The putative β 4 -adrenoceptor mediates positive inotropic effects, action potential shortening and arrhythmias in ferret ventricle. Here we compared the ... MD Lowe,AA Grace,AJ Kaumann - 《Naunyn Schmiedebergs Archives of Pharmacology》 被引量: 56发表: 1999年 Putative beta(4)-adrenoceptors in...
Cells within the sinoatrial (SA) node are the primary pacemaker site within the heart. These cells are characterized as having no true resting potential, but instead generate regular, spontaneous action potentials. Unlike non-pacemaker action potentials in the heart, the depolarizing current is carrie...
Class I agents also increase pacing threshold, which may lead to a loss of capture, particularly in case of toxicity. 展开 关键词: action potential propagation anti-arrhythmic drugs atrial arrhythmias class I agents structural heart disease ventricular fibrillation ventricular pacing ventricular ...
The time course of this change is similar to that of the action potential duration in ventricle following a change in stimulation frequency. These changes of the e.c.g. are probably not due to slow alterations of neural or hormonal factors extrinsic to the heart. In the whole heart, the ...
Seizures, Epilepsy, and SUDEP: A Change of Heart? Prolongation of Action Potential Duration and QT Interval During Epilepsy Linked to Increased Contribution of Neuronal Sodium Channels to Cardiac Late Na+ Current: Potential Mechanism for Sudden Death in Epilepsy... BN Smith - 《Epilepsy Currents》 ...
The effects of a change in stimulation rate on electrical activity and accompanying contraction were investigated in ventricular cells isolated from rat heart; the cells were stimulated to contract either by brief depolarization pulses which evoked action potentials, or, under voltage-clamp conditions, ...