The cardiac action potential
Parameter estimation for a phenomenological model of the cardiac action potential
... The action potential of a cardiac cell is made up of a complex balance of ionic currents which flow across the cell membrane in response to electrical excitation of the ...the action ...
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Uncertainty and variability in models of the cardiac action potential: Can we build trustworthy models?
... in cardiac action potential models and their parame- ters need to be carefully quanti fi ed, and that results from simulation studies should be examined in a probabilistic framework to establish the ...
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Coupling of Smoothened to inhibitory G proteins reduces voltage-gated K+ currents in cardiomyocytes and prolongs the cardiac action potential duration
... This research was originally published in the Journal of Biological Chemistry. Lan Cheng, Moza M. Al-Owais, Manuel Covarrubias, Walter J. Koch, David R. Manning, Chris Peers, and Natalia Riobo-Del Galdo. Coupling of ...
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Effects of Paroxetine on a Human Ether-a-go-go-related Gene (herg) K + Channel Expressed in Xenopus Oocytes and on Cardiac Action Potential
... on Cardiac Action Potential Hee-Kyung Hong, Soobeen Hwang and Su-Hyun Jo * Department of Physiology, Kangwon National University Institute of Bioscience & Biotechnology, BK21 plus Graduate ...
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Dispersion of cardiac action potential duration and the initiation of re-entry: A computational study
... 4. Discussion In this study we have used a computational model of car- diac tissue to dissect out the effects of spatial scale, ∆gkmax, and strength of cell-to-cell coupling on APD dispersion and susceptibility to ...
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Dispersion of cardiac action potential duration and the initiation of re-entry: A computational study
... In this study we have used a computational model of car- diac tissue to dissect out the effects of spatial scale, ∆gkmax, and strength of cell-to-cell coupling on APD dispersion and susceptibility to re-entry. Wavebreaks ...
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Remote Monitoring of the Heart Condition of Athletes by Measuring the Cardiac Action Potential Propagation Time Using a Wireless Sensor Network
... The extreme physical throughput under stressed conditions in highly competing games for athletes needs instantaneous medical attention. Too much stress has a direct effect on hormonal balance, and eventually stress ...
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Repolarization of the action potential enabled by Na+ channel deactivation in PSpice simulation of cardiac muscle propagation
... The circuit shown in Figure 5 depicts the novel circuit design for achieving a closer comparison to the physiolog- ical waveform for the cardiac action potential. In this cir- cuit, BB-1 mimics the ...
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A new approach to modelling the dynamics of cardiac action potentials
... Rudy, A Dynamic Model of the Ventricular Cardiac Action Potential: L Simulation of Ionic Currents and Concentration Changes, Circ. Pertsov, Non-stationary Vortex-like R[r] ...
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Propagation of Cardiac Action Potentials: How does it Really work?
... fatal cardiac arrhythmias is still not completely known, however, in many cases the cause can be traced to a failure of the cardiac action potential to propagate ...
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Inhibition of cardiac Kv1.5 potassium current by the anesthetic midazolam: mode of action
... evidence. Action potential recordings obtained from human atrial myocytes would help with analysis of the net effect of midazolam on atrial ...of cardiac action potential can only be ...
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Cardiac dynamics: a simplified model for action potential propagation
... transmembrane potential produced by a sum of ionic gated cur- ...specific cardiac cells have been proposed ...any cardiac risk for the patient, or to check conditions not easily reproducible in ...
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Action Potential Duration Restitution and Electrical Excitation Propagation in a Ring of Cardiac Cells
... the action potential duration (APD) restitution curve becomes a double-valued function and is located below the original (that of an isolated cell) APD restitution ...
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The effect of myocardial action potential duration on cardiac pumping efficacy: a computational study
... the action potential duration (APD) have been carried out, most of them are based only on electrophysiological factors of the heart and lack experiments that consider cardiac mechanical and ...
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A second-generation computational modeling of cardiac electrophysiology: response of action potential to ionic concentration changes and metabolic inhibition
... Background Cardiac disease is the leading cause of deaths ...the cardiac contraction is produced by softly propagating non-linear electrical waves of exci- ...of cardiac cells is instigated by a ...
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Action potential in HH model
... the action potential of the different ion channels which shows the generation and propagation of electric signals and which also shows the curve between the rate constants ...
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Action Potential And Muscle Contraction Video
... process. Action Potentials and Muscle Contraction ...an action potential will ...194 Cardiac Physiology Anatomy & ...muscle action potential and edv and ...
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Correlating cardiac action potentials with metabolic markers during acute cardiac ischemia in rabbit hearts
... Incorporating these new values provided near maximum temporal efficiency and only 2 minutes per spectral acquisition. All other parameters remained unaltered. Along with changes to the temporal resolution, the shim set ...
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Transient Receptor Potential (TRP) Channels and Cardiac Fibrosis
... identifiable cardiac diseases [30, 31], as well as in AF patients with lone AF [30, ...atrial action potential properties or connexin protein distribution [34], suggesting that atrial fibrosis itself ...
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Utility of Monophasic Action Potentials in the Diagnosis and Treatment of Cardiac Arrhythmias
... junction, in order to assess PVI. Current measurement systems have several limitations. The first limitation is in electrode size. Larger electrodes will integrate electrical activity over a larger tissue area, causing a ...
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