Open AccessEvolution of spiral waves in indirectly coupled excitable medium with time-delayed coupling
Author(s) -
Chen Xing-Ji,
Qiao Cheng-Gong,
Lili Wang,
Zhenwei Zhou,
Tian Tao-Tao,
Tang Guo-Ning
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.128201
Subject(s) - spiral (railway) , physics , spiral wave , coupling (piping) , excitable medium , oscillation (cell signaling) , mechanics , synchronization (alternating current) , optics , channel (broadcasting) , telecommunications , materials science , chemistry , mathematical analysis , mathematics , metallurgy , biochemistry , computer science
The interaction between two spiral waves in two-layer excitable medium coupled indirectly through a passive medium and with time-delayed coupling is investigated by using the Bär model. The numerical results show that time-delayed coupling can either facilitate the synchronization of two spiral waves or lead to the transition from spiral wave to collective oscillation, different target waves, spatiotemporal chaos or rest state. Period-2 and period-3 spiral waves and the meander or drift of spiral wave are observed in the coupled excitable medium. The physical mechanism underlying these phenomena is discussed.