Fig. 9

Most and least efficient composite signals across all nerves and cuffs. Efficiency was measured in terms block threshold rms. For visualization, one of the most efficient waveforms for each cuff type (20,210,908, 20,211,005, and 20,211,020) was designated as reference waveforms for that cuff type, and all the most efficient waveforms and the sign-flipped least efficient waveforms were aligned to those reference waveforms to maximize cross-correlation