Spiking response when a class 1 neuron is matched with type 2 synaptic inputs (A,B) upon altering stimulus rate (below). Class 2 neuron matched with type 1 synaptic inputs (C,D). Class 1 neuron receiving type 1 synaptic inputs (unmatched; E,F). Class 2 neuron receiving type 2 synaptic inputs (unmatched; G,H). Average synaptic stimulus frequency altered for 400 ms from 10 to 30 Hz (A,C,E,G) and 10 to 40 Hz (B,D,F,H).