We investigate the response of a linear chain of diffusively coupled d
iode resonators under the influence of thermal noise. We also examine
the connection between spatiotemporal stochastic resonance and the pre
sence of kink-antikink pairs in the array. The interplay of nucleation
rates and kink speeds is briefly addressed. The experimental results
are supplemented with simulations on a coupled map lattice. We further
more present analytical results for the synchronization and signal pro
cessing properties of a Phi(4) field theory and explore the effects of
various forms of nonlinear coupling. (C) 1998 American Institute of P
hysics.