Fig. 7. Behavior of fast-spiking interneuron model, described in  Appendix D, as β^synis decreased, corresponding to a prolongation in time that GABA^Achannels remain open. The membrane potential for an individual neuron is shown in the left hand-hand column. The average membrane potential from all 100 neurons in the simulation is shown in the right-hand column and is the model analog of the electroencephalograph. Simulations are shown for β^synequal to 0.08 (A ) and 0.06 (B ) ms⁻¹. The injection current for each neuron was chosen randomly from a Gaussian distribution with a mean of 1.0 μA/cm²and SD 0.03 μA/cm².