Optoelectric Cannula - multiple 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.
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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 single unit and LFP L8-W35-A45 50 µm tungsten wire with flat tip 0.1 to 0.5 M single unit and LFP W50-FLT 50 µm tungsten wire with 45 deg angled tip 0.1 to 0.5 M single unit and 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 -
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 -
Optoelectric Cannula
- Brochure
Electrode Pattern
- Around 400um central fiber-optic
Electrode Pattern
- Around 250um central fiber-optic
Optoelectric Cannula - multiple electrodes
- Drawing
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