Figure 1. AP waveform to illustrate the variables measured.

An intracellularly recorded somatic AP of an Aα/β-fibre neurone evoked by electrical stimulation of the dorsal root showing the electrophysiological parameters measured. These were membrane potential (V_m) (1), AP duration at base (APdB) (2), AP rise time (RT) (3), AP fall time (FT) (4), and AHP duration to 80 % recovery (AHP₈₀) (5).