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Specific parameter values for passive radial cable
| Parameter | Symbol | Value | Dimension |
| Radius | a | 20–30 | µm |
| Specific capacitance TTS wall | CW | 0.9 | µF/cm2 |
| TTS lumen conductivity | GL | 11.3 | mS/cm |
| TTS access resistance | Rs | 10-40 | Ωcm2 |
| Fraction of fiber volume occupied by the TTS | ρ | 0.004 | |
| Volume to surface ratio of the TTS | ς | 1.1 × 10−6 | cm |
| Tortuosity factor on the TTS | σ | 0.32 | |
| Na diffusion coefficient | DNa | 10−5 | cm2/sec |
