Engineering of Chemical Complexity II
Engineering of Chemical Complexity II
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化学复杂性工程II
DOI:
10.1142/9789814616133_0013
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Biktashev V
中科院分区:
文献类型:
--
作者:
Biktashev V
One of notable events in the history of creation of the new science of “cybernetics” was Norbert Wiener’s visit to Arturo Rosenblueth in Mexico, which resulted in their joint paper, 1 describing the first mathematical model of propagation of excitation pulses through a two-dimensional (2D) continuum, such as heart muscle. An important assertion of that theory was the possibility of the pulses to circulate around inexcitable obstacles, with important implications for understanding certain cardiac arrhythmias. Balakhovskii2 realized that circulation of waves does not in fact require an obstacle, and the excitation wave may circulate “around itself”, ie, turning around its own refractory tail. Subsequently, such regimes of propagation became known as “reverberators”,“rotors”,“autowave vortices” and, mostly,“spiral waves”(see Fig. 1A). With the state of cardiac electrophysiology at the time, this concept remained a purely theoretical abstraction until the periodical chemical reaction discovered by Belousov3 came to light and was further developed and investigated by Zhabotinsky4, 5 (Belousov–Zhabotinsky reaction, or just BZ) to fruition. The reaction was spontaneously oscillating, however in a non-stirred reactor, the fronts of the reaction oxidation stage were propagating similarly to electric pulses in cardiac muscle, and the spiral waves made by such propagation were observed. 6 The analogy with cardiac excitability was made even more