Fig. 11.
Cross-excitation within the DRG. Held at −45 mV, this A0 neuron (Vr = −60 mV) fired occasional spike bursts. Cross-depolarization evoked by tetanic stimulation of the axons of neighboring neurons (dashed line) enhanced the amplitude of subthreshold oscillations and increased the prevalence of bursts. Firing rate during bursts was not affected (ISI dot display is shown above each burst). Sample traces 1–4 (bottom) are taken from the times indicated. Short vertical linesare stimulus shock artifacts from the nerve stimulation.