Figure 6. Effects of electrode tip metallization and electrode length on array performance in NHP implants.

a, c. The average yield for each six-month date window was calculated for each array; an average was then taken across all arrays with the same metallization or electrode length (short-1.0 mm, long-1.5 mm), respectively. Shaded regions for all plots indicate the standard error of the mean, across arrays. b, d. Average SNR based on metallization and electrode length, respectively. Statistical tests were corrected for multiple comparisons using Bonferroni correction. Stars indicate statistically significant differences between groups, Bonferroni corrected. Averages were calculated over recordings and arrays for which data was available for each time window. Only NHP data were used for this figure.