Figure 1. Heterogeneous spiking patterns in SDH neurons.

A, sample recordings from five SDH neurons showing the range of spiking patterns evoked by sustained somatic current injection. Note that delayed spiking is preceded by a sharp inflection (shaded circle) indicative of an A‐type potassium current; the inflection is replaced by an initial spike in gap spiking. However, spiking pattern is not a truly innate property of the neuron since it can vary with stimulus intensity (B) or pre‐stimulus membrane potential (C). D, example of a neuron in which different combinations of stimulus intensity and membrane potential yielded four different spiking patterns. Modified from Prescott and De Koninck (2002).