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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.

Click to download the Application Note


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
Dimensions9 x 9 x 10 mm
Mass0.8 gr
ConnectorOmnetics NPD-18-DD-GS connector
Optical connector1.25 mm zirconia ferrule
Drawing

Optoelectric Cannula - multiple electrodes

Electrodes Pattern

Around 250µm central fiber-optic

Around 250µm central fiber-optic

BrochureFREN

Custom optical fiber and electrode configurations



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