Delay-induced patterns in a two-dimensional lattice of coupled   oscillators
  We show how a variety of stable spatio-temporal periodic patterns can be created in 2D-lattices of coupled oscillators with non-homogeneous coupling delays. A "hybrid dispersion relation" is introduced, which allows studying the stability of time-periodic patterns analytically in the limit of large delay. The results are illustrated using the FitzHugh-Nagumo coupled neurons as well as coupled limit cycle (Stuart-Landau) oscillators. 
Markus Kantner, Serhiy Yanchuk and Eckehard Sch\"oll
math.DS nlin.CD nlin.PS