Figure 3. (A) Sequential return of nerve function by class of fiber correlates with sequential return of sensation at the L2-L3 dermatome after lidocaine spinal anesthesia. Mean and standard deviation displayed. *Different from baseline (P < 0.05). (B) Relative function of each nerve fiber type at time of loss of tolerance to electrical stimulus. Mean and standard deviation displayed. *Different from baseline (P - 0.025).