Figure 3: Illustration of the activity in another network. Traces of simulated membrane potentials for 90 neurons are shown. The top 81 traces are for the excitatory neurons and the bottom 9 are for the inhibitory neurons. Four selected neurons are continuously activated by random Poisson excitatory input, with $A_n=0.786 mA$ and $\lambda=0.00003$. Synaptic weights equal 60 for excitatory connections and -120 for inhibitory connections. A. The output from simulations of network where each neuron has 2 excitatory and 3 inhibitory synapses on input. Synchrony measure $\Delta = 0.036$. B. The output from simulations of a network with 4 excitatory and 9 inhibitory synaptic inputs; $\Delta=0.098$. C. The output from simulations of a network with 6 excitatory and 9 inhibitory synaptic inputs; $\Delta=0.19$.