Table 2: A summary of impedance comparisons between this study and others.
| Reference | Electrode Type | Mammal and insertion location | Contact surface area (mm2) | 1 kHz impedance (ohms) | Impedance/unit surface area (ohms/mm2) |
|---|---|---|---|---|---|
| Williams et al. (2007) | Microelectrode tungsten array | Hooded Long Evan Rat: S1 cortical barrel | 0.112–0.143 | ≈100,000 | 698,000 (if maximum contact surface area) |
| Lempkaet al. (2009) | custom Pl/Ir microelectrode | Rhesus macaque: ventral thalamus and subthalamic nucleus | 1.18 | ≈3500 | 2971 |
| This work | Medtronic model 3387 | Agarose | 5.99 | (@ 1.172 kHz) 3186.27 (bipolar) | 532.4 |