Fig. 3.

Response of a medium-threshold motoneuron to a triangular, noisy, excitatory conductance waveform. A: membrane voltage at the soma (black) and the middle of the dendrite (red). B: instantaneous firing rate. C: excitatory synaptic conductance (G). The red trace shows the mean conductance level. The graph plots the conductance density, which was uniform on the soma and dendritic compartments. D and E: membrane potential (D) and instantaneous firing rate (E) at the beginning of the response, shown on an expanded time scale. See Quantitative analysis for definitions.