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Thomas RECORDING offers a combination of a single core quartz glass insulated platinum/tungsten microelectrode fiber (OD=80µm) and an optical fiber (OD=120µm) in a parallel arrangement like shown in figure 1.

The Thomas Optrode can be adapted to the special requirements of our customers. Details are shown in the optrode product brochure below. If you should have any further question please do not hesitate to contact us!

Key features:

  • Material: Quartz glass insulated Platinum/Tungsten tetrode fiber combined with a glass fiber
  • Outer electrode shaft diameter 80µm (single electrode fiber)
  • Outer glass fiber diameter 120µm
  • Unique material combination
  • Biocompatible materials
  • Very thin shafts minimize tissue damage
  • Different electrode tissue impe-dance values available for recor-ding multi unit, single unit activi-ty or local field potentials
Technical Data
Article nameThomas Optrode
Material:Quartzglass insulated Platinum/Tungsten microelectrode fiber combined with glass fiber
Outer shaft diameter:Electrode – 80µm, glass fiber – 120µm


The Thomas Optrode is a combination of a single core quartz glass platinum/tungsten microelectrode with an optical fiber. Figure 1 shows the standard configuration of a Thomas Optrode. The microelectrode fiber and the optical fiber are strengthened by a stainless steel tube so that it is possible to clamp the Optrode to a standard electrode holder.

At the top end the optical fiber is strengthed by a silica tube and the end of the optical fiber is equipped with an optical fiber connector. The different lenghts of the Optrode can be adapted to the requirements of the customer. Please feel free to aks for your individual design. 

Figure 1: Technical drawing of Thomas Optrode


[2] Chaves-Coira I., Barros-Zulaica N., Rodrigo-Angulo M. Núñez, Á.
Modulation of Specific Sensory Cortical Areas by Segregated Basal Forebrain Cholinergic Neurons Demonstrated by Neuronal Tracing and Optogenetic Stimulation in Mice 
Front. Neural Circuits Volume 10, Article 28 (April 20, 2016) doi: 10.3389/fncir.2016.00028
Click here for free full text on frontiers in Neural Circuits

[1] Stauffer W. R., Lak A., Yang A., Borel M., Paulsen O., Boyden E. S., Schultz W.
Dopamine Neuron-Specific Optogenetics Stimulation in Rhesus Macaques
Cell Volume 166, Issue 6, page 1564-1571 (September 8, 2016).
Click here for free full text on

Questions? Please don’t hesitate contacting us!

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