Title
On Cellular Automata Modeling of Cardiac Pacemaker.
Abstract
Motivated by modern physiology, cellular automata of Greenberg-Hastings type is considered. The basic cell of the system performs a cyclic 3-state intrinsic dynamics F -> R -> A -> F -> ... which is delimited by time intervals n(F), n(R), n(A) of steps spent by the cell in particular states. It is shown that proposed cellular automata can be thought as a reliable approximate model to the real cardiac pacemaker. The time intervals determine the period of the whole pacemaker beating. The relation between n(R) and n(F) works as a switch between two types of global dynamics: active dynamics where permanent mutual impacts between cells generate the most frequent impulses, and passive dynamics which is distinguished by the special self-organization of phases between the subsequent cells. The passive dynamics allows to propagate signals from the outside world while the active dynamics protects the system against external influence.
Year
Venue
Keywords
2010
JOURNAL OF CELLULAR AUTOMATA
Greenberg-Hastings cellular automata,excitable media,sinus node
Field
DocType
Volume
Cellular automaton,Topology,Discrete mathematics,Cardiac pacemaker,Passive dynamics,Computer science,Algorithm
Journal
5
Issue
ISSN
Citations 
SP6
1557-5969
0
PageRank 
References 
Authors
0.34
1
1
Name
Order
Citations
PageRank
Danuta Makowiec164.74