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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.