Figure 5.

Threshold and Impedance measurements over time indicate stable neural interface. Perceptual thresholds were measured for each contact for the first 8 weeks of the median (A), ulnar (B), and radial (C) nerve cuffs of subject 1. Threshold measures using a different stimulation waveform, patterned stimulation intensity, are shown up to 105 weeks (E). In subject 2, threshold measures were recorded up to 74 weeks on every contact in the median (F) and radial (G) nerve cuffs. Impedance measures also suggest stable neural interfaces in subject 1 (D) and subject 2 (H).