Title :
Stable vortex rings of excitation in neuroelectric media
Author :
Skaggs, W. ; Lugosi, E. ; Winfree, Arthur T.
Author_Institution :
Dept. of Ecology & Evolutionary Biol., Arizona Univ., Tucson, AZ, USA
fDate :
7/1/1988 12:00:00 AM
Abstract :
The membranes of living cells, for example, in heart muscle, support electric dipoles which invert momentarily following an electrical stimulus that exceeds a threshold. The pulse propagates as an `action potential´ at about 0.5 mm/ms in the three-dimensional `foam´ of cellular membranes. Four computer generated panels are shown which graphically represent such waves, using a continuum model with the FitzHugh-Nagumo cable equation used to model the excitable medium
Keywords :
bioelectric phenomena; medical computing; neurophysiology; physiological models; FitzHugh-Nagumo cable equation; action potential; cellular membranes; computer generated panels; continuum model; electric dipoles; electrical stimulus; excitable medium; heart muscle; living cells; membranes; neuroelectric media; stable vortex rings; Boundary conditions; Chemicals; Environmental factors; Evolution (biology); Heart; Muscles; Spirals; Timing;
Journal_Title :
Circuits and Systems, IEEE Transactions on
