Fig. 2.

Response to a periodic train of compound unitary conductance events. A, Membrane potential, showing an adapting response with four action potentials. B, Conductance stimulus, comprising a train of 50 unitary compound AMPA–NMDA events (see Fig. 1A) at 5 msec intervals. AMPA (thin lines) and NMDA (thick lines) components are shown separately. C, The total current command signal, produced according to Equation 1 for the AMPA component and Equation 2 for the NMDA component. Inward current is downward.