Neural Probes · A-Series (Polytrode & Tetrode)
4-Shank 64-Channel Probe, 5 mm
Sites clustered rather than spread — polytrode and tetrode groups a sorter can separate
Four mid-length shanks side by side, closely spaced for coverage within one structure, with sites staggered in three columns so neighbouring sites see the same units. Among the 371 probe designs in the design space it is in the lower quartile: 64 sites (a common choice — 68 of 369), 5 mm shanks (a common choice — 107 of 363), a 0.12 mm-deep site array (6th percentile), 861 sites/mm² (83rd percentile) and a 0.35 mm³ neural interface (19th percentile).
Small sites read a local patch at higher impedance, sharpening single-unit isolation, packed densely enough to track a unit across neighbouring sites. The mid-length shanks reach structures a few millimetres down.
Orders as a probe-plus-package assembly, in 22 package configurations, 3 of them microdrive-compatible. Silicon 15 µm thick. Z-coat not available on this close-spaced poly layout. Optical stimulation runs from a separate laser or LED source. Research use only.
SKU prb_ahc--a4x16_poly3_5mm_20s_200_160 · Neural Probes in the webstore
Specifications
| Channels | 64 |
|---|---|
| Shanks | 4 |
| Shank length | 5 mm |
| Shank separation | 200 µm |
| Site layout | Poly3 |
| Site area | 160 µm² |
| Site pitch | 10 µm |
| Vertical span | 115 µm |
|---|---|
| Substrate | Silicon |
| Site material | Iridium |
| Thickness | 15 µm |
| Neural interface volume | 0.352 mm³ (higher than 19% of 371 designs) |
| Site coverage density | 861.1 sites/mm² (higher than 83% of 371 designs) |
| Brain coverage density | 181.7 sites/mm³ (higher than 95% of 371 designs) |