Fig. 3

Pairwise comparisons showing that the most efficient blocking frequency occurred at a higher frequency than the minimum block frequency and that it blocked more efficiently than the minimum blocking frequency. A Pairwise comparison of data from all nerves and cuff types in terms of frequency. B Pairwise comparison of data from all nerves and cuff types in terms of block threshold. No nerve underwent testing with multiple cuffs. For visualization in panel (A), both the x-axis and y-axis coordinates of monopolar data points and tripolar data points are offset by − 0.05 Hz (tripolar) or + 0.05 Hz (monopolar). Both panels indicate significantly different pairwise comparisons by a signed rank test at α = 0.05 after multiple comparison correction with Hochberg’s step-up procedure for twelve comparisons (see Additional file 1: Fig. S5 for data from all twelve comparisons)