Fig. 1. Schematic of gross anatomical properties of the model. The model contains 7,680 neurons, of which 80% are excitatory. Each excitatory neuron synapses locally on 150 neuronal compartments via  nonmyelinated collaterals and via  a myelinated axon on an additional 50 neuronal compartments. The inhibitory cells synapse on 160 compartments locally via  nonmyelinated collaterals. (Adapted from Izhikevich EM, Gally JA, Edelman GM. Spike-timing dynamics of neuronal groups. Cereb Cortex 2004; 14:933–44.) r = radius.