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Table 1 Average impedances for each electrode in chronically implanted arrays

From: Development of a multi-electrode array for spinal cord epidural stimulation to facilitate stepping and standing after a complete spinal cord injury in adult rats

   Days Post-Implantation
7 21 35
  Array Columns
Array Rows   A B C A B C A B C
  1 4.8 5.6 5.9 8.5 11.1 12.8 4.8 13.9 17.0
  2 6.6 5.3 8.2 9.2 5.4 9.8 5.2 13.9 17.0
  3 8.0 6.7 8.7 5.3 5.0 6.5 3.9 6.8 5.6
  4 4.1 9.4 4.0 4.9 6.3 25.9 5.1 18.0 50.0
  5 4.1 3.8 6.7 7.7 7.0 7.1 4.4 36.0 7.0
  6 5.6 11.5 6.4 4.1 11.6 5.4 4.4 13.0 6.0
  7 7.2 4.9 8.9 7.3 6.7 7.4 4.1 8.0 9.8
  8 5.8 5.1 4.3 5.2 6.5 6.0 11.2 8.0 7.0
  9 5.3 6.1 6.2 7.5 5.8 6.2 9.2 7.0 7.0
  1. Values (k) are the average (n = 5 rats) electrode impedances at 7, 21, and 35 days post-implantation. Increased impedance resulted in higher stimulation intensities needed to evoke a functional motor response. Impedances at 7 days post-implantation were similar to impedances recorded prior to implantation.