Propagation failures, breathing pulses, and backfiring in an excitable reaction-diffusion system.
We report results from experiments with a pseudo-one-dimensional Belousov-Zhabotinsky reaction that employs 1,4-cyclohexanedione as its organic substrate. This excitable system shows traveling oxidation pulses and pulse trains that can undergo complex sequences of propagation failures. Moreover, we present examples for (i) breathing pulses that undergo periodic changes in speed and size and (ii) backfiring pulses that near their back repeatedly generate new pulses propagating in opposite direction.
Manz
Niklas
N
Florida State University, Department of Chemistry and Biochemistry, Tallahassee, Florida 32306-4390, USA.
Steinbock
Oliver
O
D000818:Animals; D001703:Biophysics / Q000379:methods*; D002625:Chemistry, Organic / Q000379:methods; D003512:Cyclohexanones / Q000737:chemistry*; D004058:Diffusion; D006801:Humans; D008314:Malonates / Q000737:chemistry; D008955:Models, Cardiovascular; D008959:Models, Neurological; D008962:Models, Theoretical; D009474:Neurons / Q000378:metabolism; D017711:Nonlinear Dynamics; D012119:Respiration; D012815:Signal Processing, Computer-Assisted; D009435:Synaptic Transmission; D013816:Thermodynamics; D013997:Time Factors
D003512:Cyclohexanones; D008314:Malonates; C030290:malonic acid