Multiarmed spiral waves with different arm numbers are developed in the network with certain transient period.

Abstract

<p>For(a) 2-arm spiral wave at , for (b)3-arm spiral wave , for (c)4-arm spiral wave at , for (d)8-arm spiral wave at , no external forcing current is imposed on the network. The nodes close to the tips of inboard spiral waves are coupled with intensity , other nodes are coupled with intensity (similar to the illustration in Fig. 7).</p