Table 1.
Summary of selected studies of device failure for traditional electrode designs. For each study, samples which did not undergo the entire chronic implantation were removed.
| Electrode Type |
Animal | Number of arrays (Electrodes) |
Time course of experiment (Days) |
Yield at end of experiment (%) |
Total Failure (%) |
Ref. |
|---|---|---|---|---|---|---|
| Utah 10×10 | Monkey | 69 | 2104 | N/A | 79 | [3] |
| Michigan Single Shank | Mouse | 3 (36) | 133–189 | N/A | N/A | [5] |
| Tungsten Microwire | Rat | 12 (192) | 260 | 24.6* | 75.4 | [4] |
| Pt/Ir Microwire | Rat | 6 (96) | 71–180 | 33** | N/A | [6] |
*
Average yield on the last day of the implantation
**
Average yield for the entirety of the chronic phase of implantation.