Optoelectric Cannula - multiple electrodes
Optoelectric Cannula - multiple electrodes
Our optoelectric cannulas combine an optical fiber for optogenetics and/or photometry with 1 to 16 electrodes for electrophysiology recordings in freely-moving animals. The electrodes are connected via a 18 pins connector to Doric electrophysiology tethered headstage. We offer tungsten wire electrodes with diameter of 25, 35, 50 microns for single unit, multi units or field potential recording. Custom configurations are available upon request, like the type of electrodes, the number of optical fibers and the disposition of the optical fibers and electrodes.
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Our optoelectric cannulas combine an optical fiber for optogenetics and/or photometry with 1 to 16 electrodes for electrophysiology recordings in freely-moving animals. The electrodes are connected via a 18 pins connector to Doric electrophysiology tethered headstage. We offer tungsten wire electrodes with diameter of 25, 35, 50 microns for single unit, multi units or field potential recording. Custom configurations are available upon request, like the type of electrodes, the number of optical fibers and the disposition of the optical fibers and electrodes.

The light propagation into brain tissue will vary with the optical fiber type and the light source parameters. It can be visualized in this Application Note (the French version is available here).
| Description | Drawing | Code | Note |
| Flat Tip | ![]() |
FLT | |
| Conical Tip | ![]() |
C45 C60 |
Rounded tip thickness: ~0.1x to 0.2x core diameter Standard angles: 45°, 60° Other angles on request (max 60°) |
| Taper Tip | ![]() |
TAPER |
| DESCRIPTION | Impedance (Ohm) |
RECOMMENDED USE | CODE |
| 1x8 linear array of 35 µm tungsten wire with 45 deg angled tip | 0.2 to 0.8 M | LFP | L8-W35-A45 |
| 50 µm tungsten wire with flat tip | 0.1 to 0.5 M | LFP | W50-FLT |
| 50 µm tungsten wire with 45 deg angled tip | 0.1 to 0.5 M | LFP | W50-A45 |
| 75 µm tungsten wire with tapered tip | 0.1 M | LFP | 0.1M-75 |
| 0.5 M | LFP | 0.5M-75 | |
| 1.0 M | Multi unit | 1.0M-75 | |
| 1.5 M | Multi unit | 1.5M-75 | |
| 2.0 M | Single and Multi unit | 2.0M-75 | |
| 2.5 M | Single and Multi unit | 2.5M-75 | |
| 3.0 M | Single unit | 3.0M-75 | |
| 5.0 M | Single unit | 5.0M-75 |
| Dimensions | 9 x 9 x 10 mm |
| Mass | 0.8 gr |
| Connector | Omnetics NPD-18-DD-GS connector |
| Optical connector | 1.25 mm zirconia ferrule |




