Table 1.
Array specifications for each animal
| Monkey ID | Array Type | Size, mm | Electrode Length, mm | Manufacturing Impedance, MΩ | Array Signal Longevity | Likely Failure Mode |
|---|---|---|---|---|---|---|
| WH | FMA HD | 1.6 × 2.95 | 2.0–2.5 | 0.5–0.9 | 6 wk | Wire bundle failure |
| TE | FMA HD | 1.6 × 2.95 | 2.0–2.5 | 0.3–1.1 | 6 mo | Wire bundle failure |
| PI | FMA SD | 1.8 × 4 | 1.5–2.0 | 0.4–0.7 | 6 wk | Wire bundle failure |
| BA | FMA SD | 1.8 × 4 | 2.0–2.5 | 0.7–1.1 | 3 wk | Wire bundle failure |
| CU | FMA HD | 1.6 × 2.95 | 2.0–2.5 | 0.4–1.0 | N/A | Fluid leakage |
| CH2 | FMA SD | 1.6 × 2.8 | 1.5–3.0 | 0.08–1.5 | <1 wk | Array manufacturing defect |
| KR | FMA SD | 1.8 × 4.0 | 1.0–2.0 | 0.3–1 | 2 wk | Array came out |
| MR | FMA HD | 1.6 × 2.8 | 1.25–2.5 | 0.6–1.3 | N/A | Array did not insert |
| HA | FMA SD | 1.8 × 4.0 | 1.0–2.25 | 0.5–1.0 | 6 wk | Wire bundle failure |
| LA1 | FMA HD | 1.6 × 2.8 | 1.0–2.5 | 0.5–1.0 | 2 mo | Wire bundle failure |
| OL | Utah | 4.0 × 4.0 | 1.5 | 0.3–0.8 | 1 day | Meningoencephalitis |
| LA2 | Utah | 4.0 × 4.0 | 1.5 | 0.1–0.8 | >6 mo | N/A |
| CH1 | Utah | 4.0 × 4.0 | 1.3 | 0.2–0.8 | <1 wk | Array came out |
HD, high definition; SD, standard definition; N/A, not applicable.