Different description levels of chemical wave front and propagation speed selection

1999 ◽  
Vol 111 (14) ◽  
pp. 6190-6196 ◽  
Author(s):  
A. Lemarchand ◽  
B. Nowakowski
Keyword(s):  
Wave Front ◽  
Propagation Speed ◽  
Speed Selection

scholarly journals How Hyperpolarization and the Recovery of Excitability Affect Propagation through a Virtual Anode in the Heart

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Nicholas P. Charteris ◽  
Bradley J. Roth
Keyword(s):  
Wave Front ◽  
Time Constant ◽  
Computer Model ◽  
Propagation Speed ◽  
One Dimensional ◽  
Upper Limit ◽  
Rapid Propagation ◽  
Upper Limit Of Vulnerability ◽  
Key Factor ◽  
Sodium Inactivation

Researchers have suggested that the fate of a shock-induced wave front at the edge of a “virtual anode” (a region hyperpolarized by the shock) is a key factor determining success or failure during defibrillation of the heart. In this paper, we use a simple one-dimensional computer model to examine propagation speed through a hyperpolarized region. Our goal is to test the hypothesis that rapid propagation through a virtual anode can cause failure of propagation at the edge of the virtual anode. The calculations support this hypothesis and suggest that the time constant of the sodium inactivation gate is an important parameter. These results may be significant in understanding the mechanism of the upper limit of vulnerability.

Centrifugal Wave Front Propagation Speed for Localizing the Origin of Ventricular Arrhythmias

2018 ◽  
Vol 4 (3) ◽  
pp. 355-363 ◽  
Author(s):  
Masaharu Masuda ◽  
Mitsutoshi Asai ◽  
Osamu Iida ◽  
Shin Okamoto ◽  
Takayuki Ishihara ◽  
...  
Keyword(s):  
Wave Front ◽  
Ventricular Arrhythmias ◽  
Propagation Speed ◽  
Front Propagation ◽  
Wave Front Propagation

Propagation speed of a chemical wave front: effect of confinement

2009 ◽  
Vol 35 (1-2) ◽  
pp. 186-192
Author(s):  
J.S. Hansen ◽  
B.D. Todd
Keyword(s):  
Wave Front ◽  
Propagation Speed

Centrifugal wave-front propagation speed for localizing the atrial tachycardia origin

2019 ◽  
Vol 279 ◽  
pp. 96-99 ◽  
Author(s):  
Naoya Kurata ◽  
Masaharu Masuda ◽  
Mitsutoshi Asai ◽  
Osamu Iida ◽  
Shin Okamoto ◽  
...  
Keyword(s):  
Wave Front ◽  
Atrial Tachycardia ◽  
Propagation Speed ◽  
Front Propagation ◽  
Wave Front Propagation

WAVE FRONT PROPAGATION SPEED DERIVED FROM ARBITRARILY DISTRIBUTED TIME MARKERS

2009 ◽  
Author(s):  
M. Werdiger ◽  
S. L. Pistinner ◽  
Mark Elert ◽  
Michael D. Furnish ◽  
William W. Anderson ◽  
...  
Keyword(s):  
Wave Front ◽  
Propagation Speed ◽  
Front Propagation ◽  
Wave Front Propagation

scholarly journals Huygens' Principle geometric derivation and elimination of the wake and backward wave

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Forrest L. Anderson
Keyword(s):  
Wave Propagation ◽  
Wave Front ◽  
Propagation Speed ◽  
New Wave ◽  
Forward Wave ◽  
Wave Fronts ◽  
Propagation Analysis ◽  
Backward Wave ◽  
Tangential Surface ◽  
Huygens Principle

AbstractHuygens' Principle (1678) implies that every point on a wave front serves as a source of secondary wavelets, and the new wave front is the tangential surface to all the secondary wavelets. But two problems arise: portions of wavelets that exist outside of the new wave front combine to form a wake. Also there are two tangential surfaces so wave fronts are propagated in both the forward and backward directions. These problems have not previously been resolved by using a geometrical theory with impulsive wavelets that are in harmony with Huygens' geometrical description. Doing so would provide deeper understanding of and greater intuition into wave propagation, in addition to providing a new model for wave propagation analysis. The interpretation, developed here, of Huygens' geometrical construction shows Huygens' Principle to be correct: as for the wake, the Huygens' wavelets disappear when combined except where they contact their common tangent surfaces, the new propagating wave fronts. As for the backward wave, a source propagates both a forward wave and a backward wave when it is stationary, but it propagates only the forward wave front when it is advancing with a speed equal to the propagation speed of the wave fronts.

Wave-front evaluation of the Ni-like Ag laser

2001 ◽  
Vol 11 (PR2) ◽  
pp. Pr2-155-Pr2-158 ◽  
Author(s):  
K. Murai ◽  
S. Sebban ◽  
H. J. Tang ◽  
Y. Yoshizumi ◽  
H. Daido ◽  
...  
Keyword(s):  
Wave Front

Wave-front inversion in induced light scattering

1978 ◽  
Vol 126 (12) ◽  
pp. 683-686
Author(s):  
Boris Ya. Zel'dovich ◽  
V.V. Ragul'skii
Keyword(s):  
Light Scattering ◽  
Wave Front
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