Suppression of spiral waves using intermittent local electric shock |
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Authors: | Ma Jun Ying He-Ping and Li Yan-Long |
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Affiliation: | Department of Physics, Lanzhou University of Technology, Lanzhou 730050, China; Zhejiang Institute of Modern Physics in the Zhejiang University, Hangzhou 310027, China |
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Abstract: | In this paper, an intermittent local electric shock scheme is proposed to
suppress stable spiral waves in the Barkley model by a weak electric shock
(about 0.4 to 0.7) imposed on a random selected n×n grids (n=1-5,
compared with the original 256×256 lattice) and monitored
synchronically the evolutions of the activator on the grids as the sampled
signal of the activator steps out a given threshold (i.e., the electric
shock works on the n×n grids if the activator
u\leq0.4 or u \geq 0.8). The numerical
simulations show that a breakup of spiral is observed in the media
state evolution to finally obtain homogeneous states if the electric
shock
with appropriate intensity is imposed. |
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Keywords: | excitable media spiral waves intermittent control |
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