Table 1 Exemplary measured elements representing the wires together with values of the other elements of the bipolar EEC that best match the impedance experiment. The bilayer parameters for both SEs of a pair were assumed to be identical.

From: Electrical equivalent circuit for analyzing the effect of signal shape on power distribution in cochlear implant electrodes and surrounding tissue

 

SE 1 vs. SE 2

SE 1 vs. SE 6

SE 1 vs. SE 11

SE 1 vs. SE 16

Measured value

 \({R_{{{\text{wa}}}}}\) (Ω)

61.55

61.55

61.55

61.55

 \({R_{{{\text{wb}}}}}\) (Ω)

62.65

60.00

56.85

53.75

 \({C_{{{\text{ab}}}}}\) (pF)

9.85

9.00

7.62

7.10

 \({L_{{{\text{wa}}}}}\) (µH)

0.65

0.65

0.65

0.65

 \({L_{{{\text{wb}}}}}\) (µH)

0.70

0.70

0.70

0.69

Calculated values

 \({R_{{{\text{el}}}}}\) (kΩ)

2.16

6.13

9.95

13.51

 \({C_{{{\text{el}}}}}\) (pF)

0.24

0.24

0.95

0.95

 \({C_{{{\text{Pa}}}} = C_{{{\text{Pb}}}}}\) (nF)

80.24

138.14

107.75

83.02

 \({m_{{{\text{Ca}}}} = m_{{{\text{Cb}}}}}\) (–)

0.84

0.79

0.78

0.82

 \(R_{{{\text{Pa}}}} = R_{{{\text{Pb}}}}\) (MΩ)

1.01

0.826

0.95

0.47

 \({m_{{{\text{Ra}}}} = m_{{{\text{Rb}}}}}\) (–)

0.98

0.90

0.88

0.72

 \(R_{{{\text{Fa}}}} = R_{{{\text{Fb}}}}\) (MΩ)

4.29

1.84

2.46

3.93

 \({R_{{{\text{elep}}}}}\) (kΩ)

1.09

3.01

5.19

7.25

 \({C_{{{\text{ep}}}}}\) (pF)

0.49

9.00

7.62

7.10

 \({R_{{{\text{ep}}}}}\) (Ω)