Fig. 5. Axotomy diminishes membrane afterhyperpolarization (AHP) amplitude and duration. Sample traces show afterhyperpolarizations after axonal stimulation in two Aδ-type neurons from the same animal after spinal nerve ligation, one from the fourth lumbar dorsal root ganglion (  A ) and the another from the fifth lumbar ganglion (  B ). The initial deflection of each trace is the stimulation artifact. The  dotted line indicates the resting membrane potential for each neuron.