Heatmaps of damage scores (0-3) across the five identified types of damage and across the four imaged lesioning arrays.

Electrodes are displayed using the orientation in Figure 1 (electrode tips facing viewer, wire bundle on the right). Second-to-rightmost column displays summed damage scores for each array across the five types of damage. Electrodes used for electrolytic lesioning are denoted with blue dots. Median summed scores for each radial section of the array are plotted in the bar charts to the right of the heatmaps. Ring layout and numbering information is available in Supplementary Figure 1. Blank electrodes and electrodes with shank fractures are ignored and displayed in black, as they are not scored.

Stacked histograms of damage scores (0-3) across the five identified types of damage and across the four imaged lesioning arrays.

Gray indicates normal electrodes, and black indicates lesioning electrodes. Rightmost column displays the average distribution of damage scores across the five types of damage. Electrodes with shank fractures (SF) are ignored, as they are not scored.

Correlation plot (Pearson’s R) across the five different damage types.

AD = abnormal debris, TB = tip breakages, CC = metal coating cracks, PC = parylene C cracks, PD = parylene C delamination. Results demonstrate overall low correlation (magnitude < 0.25) across different damage types, with the exception of coating cracks and tip breakage, with a correlation coefficient of 0.47. Test values with Bonferroni-corrected p < 0.05 are displayed with asterisks. Raw p-values are separately available in Supplementary Table S1 (corr_pvals.csv). Electrodes with shank fractures are ignored, as they are not scored.

Numbering layout of the electrodes as imaged (pins facing outwards, towards reader).

Wire bundle is arranged to the right. Each radial section of the array is also color-coded and labeled. R1 refers to the innermost core electrodes of the array, R2 refers to the next outer ring of the array, and so on.

Heatmaps of damage scores (0-3) across the five identified types of damage and across all eight intact, imaged NHP arrays.

Electrodes are displayed using the orientation in Figure 1 (electrode tips facing viewer, wire bundle on the right). Second-to-rightmost column displays summed damage scores for each array across the five types of damage. Electrodes used for electrolytic lesioning are denoted with blue dots. Median summed scores for each radial section of the array are plotted in the bar charts to the right of the heatmaps. Ring layout and numbering information is available in Supplementary Figure 1. Blank electrodes and electrodes with shank fractures are ignored and displayed in black, as they are not scored.

All raw data histograms:

Stacked histograms of damage scores (0-3) across the five identified types of damage and across all eight intact, NHP imaged arrays.

Gray indicates normal electrodes, and black indicates lesioning electrodes. Rightmost column displays the average distribution of damage scores across the five types of damage. Electrodes with shank fractures (SF) are ignored, as they are not scored.

Correlation plots (Pearson’s R) for each of the five rings across all four imaged lesioning arrays.

Test values with Bonferroni-corrected p < 0.05 are displayed with asterisks. Raw r and p-values are separately available in Supplemental Table 5.corr_pvals.csv.

Mann-Whitney U and Levene test p-values when comparing scores between lesioning electrodes and non-lesioning electrodes on the same array.

Mann-Whitney U and Levene test p-values when comparing scores between all electrodes on arrays used and not used for lesioning experiments when implanted in the same subject.