Figure 3. The amplitude of the CAPs (a) and conduction velocities (b) of rat sural nerve (mean ± SD) A-fibers before (black bars) and after (white bars) nerve block induction with 2% (n = 8) and 4% (n = 9) lidocaine (L), 3% (n = 10) mepivacaine (M), and 2% (n = 9) and 4% (n = 8) articaine (A).