Table 2.
Nine estimates (i to ix) and four methods (A, B, C, D) for representing the perineurium. “Constant” refers to constancy from Weerasuriya’s frog sciatic nerve measurements to our model, as well as across fascicles diameters in our model. Small fascicle: r = 0.1 mm; large fascicle: r = 0.3 mm. Rs: sheet resistance; ρ: resistivity. When using Method B with the multifascicular model, we used the resistivity from Method D, and multiplied by the perineurium thickness estimated as 3% of each fascicle’s diameter.
| Sheet resistance for perineurial thin film approximation (Ω-m2) | Resistivity of finite (meshed) layer of perineurium (Ω-m) | ||||||
|---|---|---|---|---|---|---|---|
| Constant Rs | Constant ρ | Constant Rs | Constant ρ | ||||
| A | B – Small fascicle | B – Large fascicle | C – Small fascicle | C – Large fascicle | D | ||
| i | DC, 21°C | 0.0478 | 0.0132 | 0.0396 | 7967 | 2656 | 2198 |
| ii | DC, 37°C | 0.0250 | 0.0069 | 0.0207 | 4164 | 1388 | 1149 |
| iii | 10 kHz, 21°C | 0.0168 | 0.0046 | 0.0139 | 2800 | 933 | 772 |
| iv | 10 kHz, 37°C | 0.0088 | 0.0024 | 0.0073 | 1464 | 488 | 404 |
| V | Common value in lit | 0.0149 | 0.0041 | 0.0123 | 2483 | 828 | 685 |
| vi | 5 kHz, 21°C | 0.0251 | 0.0069 | 0.0208 | -- | -- | 1154 |
| vii | 5 kHz, 37°C | 0.0131 | 0.0036 | 0.0109 | -- | -- | 603 |
| viii | 20 kHz, 21°C | 0.0094 | 0.0026 | 0.0077 | -- | -- | 430 |
| ix | 20 kHz, 37°C | 0.0049 | 0.0013 | 0.0040 | -- | -- | 225 |