Neural Probes · A-Series (Polytrode & Tetrode)
Tetrode 4-Shank 32-Channel Probe, 5 mm
Sites clustered rather than spread — polytrode and tetrode groups a sorter can separate
Four mid-length shanks side by side, spread for lateral coverage across columns, with sites grouped in tetrodes at intervals, for unit isolation at set depths. Among the 371 probe designs in the design space it is mid-range: 32 sites (a common choice — 155 of 369), 5 mm shanks (a common choice — 107 of 363), a 0.56 mm-deep site array (30th percentile), 45 sites/mm² (19th percentile) and a 0.93 mm³ neural interface (67th 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 24 package configurations, 1 of them microdrive-compatible. Silicon 15 µm thick. Z-coat available. Optical stimulation runs from a separate laser or LED source. Research use only.
SKU prb_ahc--a4x2_tet_5mm_500_400_121 · Neural Probes in the webstore
Specifications
| Channels | 32 |
|---|---|
| Shanks | 4 |
| Shank length | 5 mm |
| Shank separation | 400 µm |
| Site layout | Tetrode |
| Site area | 121 µm² |
| Site pitch | 24 µm |
| Vertical span | 560 µm |
|---|---|
| Substrate | Silicon |
| Site material | Iridium |
| Thickness | 15 µm |
| Neural interface volume | 0.933 mm³ (higher than 67% of 371 designs) |
| Site coverage density | 45.3 sites/mm² (higher than 19% of 371 designs) |
| Brain coverage density | 34.3 sites/mm³ (higher than 36% of 371 designs) |