Fig. 11. A novel type of dorsal root ganglion neurons with long action potential (AP) duration and moderate conduction velocity (CV) is evident after direct neuronal injury by spinal nerve ligation (SNL). AP duration at 95% return to resting membrane potential (APd95) versus CV scatterplots of control neurons ( A , ˆ), neurons from the sham group ( B , ⋄), neurons from SNL fourth lumbar (L4) group ( B, ⧫), and neurons from the SNL fifth lumbar (L5) group ( C , •). The vertical line indicates 1.5 m/s CV, the horizontal line indicates 2 ms AP duration, and the shaded area includes cells with CV and AP duration exceeding these levels. Also shown are representative traces for a control neuron ( D ) and two SNL L5 neurons ( E ).