Neural Probes · A-Series (Polytrode & Tetrode)
Tetrode 8-Shank 32-Channel Probe, 3 mm
Sites clustered rather than spread — polytrode and tetrode groups a sorter can separate
Eight short shanks side by side, closely spaced for coverage within one structure, 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), 3 mm shanks (a common choice — 37 of 363), a 0.03 mm-deep site array (3rd percentile), 955 sites/mm² (86th percentile) and a 0.42 mm³ neural interface (26th 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 short shanks suit superficial targets.
Orders as a probe-plus-package assembly, in 24 package configurations, 3 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--a8x1_tet_3mm_150_121 · Neural Probes in the webstore
Specifications
| Channels | 32 |
|---|---|
| Shanks | 8 |
| Shank length | 3 mm |
| Shank separation | 150 µm |
| Site layout | Tetrode |
| Site area | 121 µm² |
| Site pitch | 20 µm |
| Vertical span | 31 µm |
|---|---|
| Substrate | Silicon |
| Site material | Iridium |
| Thickness | 15 µm |
| Neural interface volume | 0.420 mm³ (higher than 26% of 371 designs) |
| Site coverage density | 954.9 sites/mm² (higher than 86% of 371 designs) |
| Brain coverage density | 76.2 sites/mm³ (higher than 77% of 371 designs) |