Neural Probes · Matrix Array Series
4-Shank 32-Channel Probe, 5 mm
Silicon 3D probe platform — several 32-site 2D arrays, 64 to 256 channels, recording and stimulating
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: 32 sites (a common choice — 155 of 369), 5 mm shanks (a common choice — 107 of 363), a 0.06 mm-deep site array (6th percentile), 749 sites/mm² (79th percentile) and a 0.33 mm³ neural interface (16th 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 19 package configurations, 2 of them microdrive-compatible. Built for the Matrix Array platform: this 2D array installs in a Matrix package slot and is not assembled in other packages. Silicon 50 µm thick. Z-coat not available on this close-spaced poly layout. Research use only.
SKU prb_mtx--m4x8_poly3_5mm_25s_200_177 · Neural Probes in the webstore
Specifications
| Platform | Matrix Array (one 2D array per platform slot) |
|---|---|
| Channels | 32 |
| Shanks | 4 |
| Shank length | 5 mm |
| Shank separation | 200 µm |
| Site layout | Poly3 |
| Site area | 177 µm² |
| Site pitch | 12 µm |
| Vertical span | 65 µm |
|---|---|
| Substrate | Silicon |
| Site material | Iridium |
| Thickness | 50 µm |
| Neural interface volume | 0.327 mm³ (higher than 16% of 371 designs) |
| Site coverage density | 749.0 sites/mm² (higher than 79% of 371 designs) |
| Brain coverage density | 97.8 sites/mm³ (higher than 87% of 371 designs) |