Optogenetics

Optrode image

NeuroNexus optoelectrodes enable concurrent optogenetic stimulation and high-resolution electrophysiology.

Key Features:

A powerful tool – Optical fibers are laminated onto silicon probes to create an optoelectrode. Utilize a single fiber, or configure multiple fibers on a single probe (one fiber per electrode shank) to activate different opsins or target different brain areas.
Many options:
- Utilize any electrode array design
- select from multiple fiber types (and specify their termination locations on each shank) to create your ideal optoelectrode
Minimal tissue damage – Our smallest fiber option measures just 62.5 µm outer diameter
Controlled artifact – NeuroNexus optoelectrodes are engineered for minimal photoelectric artifacts

Flat Fiber Properties
Ferrule Size	1.25 mm
Length	Tolerance ± 50 µm
Fiber Tip Profile	Flat
Note	Any internal reference site or electrode sites covered by the optical fiber will be non-functional.


Inner Diameter/Outer Diameter	Numerical Aperture
50 µm/70 µm	0.22 NA (flexible)
50 µm/62.5 µm	0.22 NA (etched)
105 µm/125 µm	0.22 NA (standard)
105 µm/125 µm	0.66 NA (Plexon patch cords)
200 µm/220 µm	0.22 NA