Stochastic Resonance in Neural Systems with Small-World Connections

We study the stochastic resonance (SR) in Hodgkin--Huxley (HH) neural ystems with small-world (SW) connections under the noise synaptic current and periodic stimulus, focusing on the dependence of properties of SR on coupling strength c. It is found that there exists a critical coupling strength c* such that if cnetwork is more prominent than that on the random network (p=1.0). In addition, it is noted that the effect becomes remarkable as coupling strength increases. Moreover, it is found that the SR weakens but resonance range becomes wider with the increase of c on the SW neural network.