Figure 1.

ANNarchy script reproducing the pulse-coupled spiking network described in Izhikevich (2003). A population of 1000 Izhikevich neurons is created and split into subsets of 800 excitatory and 200 inhibitory neurons. The different parameters of the Izhikevich neuron are then initialized through attributes of the two populations. a, b, c, and d are dimensionless parameters, noise is a multiplicative factor on the random variable Normal(0., 1.) drawn each step from the standard normal distribution $\mathcal{𝒩}$(0,1), v_thresh is the spiking theshold of the neurons and tau is the time constant in milliseconds of the membrane conductances. The network is fully connected, with weight values initialized randomly using uniform distributions whose range depend on the pre-synaptic population. The source code for the network is then generated, compiled and simulated for 1000 ms.