Stimulation of unidirectional pulses in excitable systems.
Using a judicious spatial shape of input current pulses (and electrodes), responses of an excitable system (FitzHugh-Nagumo) appear as unidirectional pulses (UDP's) instead of bidirectional ones (in one dimension) or circular ones (in two dimensions). The importance of the UDP's for a possible mechanism for pinpointing the reentry cycle position and for a possible use in tachycardia suppression is discussed.
Friedman
M
M
Physics Department, NRCN, P. O. Box 9001, Beer Sheva, Israel.
Ovsyshcher
I E
IE
Fleidervish
I
I
Crystal
E
E
Rabinovitch
A
A
D000200:Action Potentials; D000818:Animals; D002304:Cardiac Pacing, Artificial / Q000379:methods; D003198:Computer Simulation; D004554:Electric Countershock / Q000379:methods*; D004558:Electric Stimulation / Q000379:methods*; D006321:Heart / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology*; D006339:Heart Rate; D006801:Humans; D008955:Models, Cardiovascular; D008959:Models, Neurological; D013610:Tachycardia / Q000503:physiopathology* / Q000628:therapy