Fig. 5.
Charge recovery before the onset of the synaptic conductance reflects the voltage change at the synapse caused by the somatic voltage command. All simulations are from the same equivalent cylinder as in Figure 1. A–C, Left panels, Synaptic voltage (Vsyn) in response to a somatic voltage-clamp step (of arbitrary amplitude) at three different locations; right panels, charge recovery curves for a synaptic delta pulse (1 nS peak conductance) at the same three locations. D, Superimposition of the synaptic voltage responses on the respective charge recoveries; both the charge recoveries and the voltage responses have been normalized by their respective maxima, and the time axis of the voltage response has been inverted. Note the exact correspondence of the voltage time course and the charge recovery in each case.