  We characterize numerically the regime of anticipated synchronization in the
coupled FitzHugh-Nagumo model for neurons. We consider two neurons, coupled
unidirectionally (in a master-slave configuration), subject to the same random
external forcing and with a recurrent inhibitory delayed connection in the
slave neuron. We show that the scheme leads to anticipated synchronization, a
regime in which the slave neuron fires the same train of pulses as the master
neuron, but earlier in time. We characterize the synchronization in the
parameter space (coupling strength, anticipation time) and introduce several
quantities to measure the degree of synchronization.
