Table 2 Equivalent circuit fitting parameters of uncoated and coated platinum before, and uncoated platinum after stimulation at varying current levels.

From: Endovascular neural stimulation with platinum and platinum black modified electrodes

Electrode

Stimulation

R1 /Ω

Q0 /10− 7 S s1/2

n

R2 /kΩ

χ2

Uncoated

Pre

598 (114)

9.7 (3.6)

0.82 (0.03)

349 (104)

0.029

Uncoated

0%

537 (25)

13.1 (2.7)

0.76 (0.03)

320 (19)

0.021

Uncoated

50%

414 (26)

23.3 (3.5)

0.73 (0.03)

223 (51)

0.027

Uncoated

90%

562 (157)

10.0 (2.8)

0.80 (0.01)

256 (34)

0.024

Coated

Pre

568 (135)

63.7 (3.7)

0.85 (0.01)

827 (537)

0.035

  1. Average (standard deviation) of 6 electrodes pre-stimulation and 2 electrodes post-stimulation.
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