Phototaxis of Spiral Waves
1992; American Association for the Advancement of Science; Volume: 257; Issue: 5067 Linguagem: Inglês
10.1126/science.257.5067.225
ISSN1095-9203
AutoresMario Markus, Zsuzsanna Nagy-Ungvárai, Benno Hess,
Tópico(s)Photoreceptor and optogenetics research
ResumoThe drift of spiral waves toward regions of higher light intensity was observed experimentally in the ruthenium-catalyzed Belousov-Zhabotinsky reaction. A light gradient can thus be used to manipulate optical information in new computational systems based on photochemical media. The drift of a gradient that is rotationally invariant in space is three to four times as fast as that of a translationally invariant gradient. Simulations based on the use of a cellular automaton, which is made isotropic by a semirandom distribution of cells, are in agreement with the experimental results.
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