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Updated: May 25, 2026
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Optrode Array for Simultaneous Optogenetic Modulation and Electrical Neural Recording
Published on: September 1, 2022
Polymer-based shaft microelectrodes with optical and fluidic capabilities as a tool for optogenetics.
Birthe Rubehn1, Steffen B E Wolff, Philip Tovote
1Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering-IMTEK and the Bernstein Center Freiburg, Albert-Ludwigs-UniversitätFreiburg, Freiburg, Germany. Birthe.Rubehn@imtek.uni-freiburg.de
Summary
Researchers developed a novel polymer-based neural probe. This multifunctional device simultaneously delivers light and fluids while recording neural signals, aiding optogenetics research.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Materials Science
Background:
- Optogenetics enables precise control of neural circuits using light.
- Simultaneous optical stimulation, fluid delivery, and neural recording are crucial for advanced in vivo experiments.
- Existing neural probes often lack the multifunctionality required for complex optogenetic studies.
Purpose of the Study:
- To fabricate a novel polymer-based shaft electrode.
- To create a multifunctional neural probe capable of simultaneous light and fluid delivery and neural signal recording.
- To facilitate in vivo optogenetic experiments by providing an integrated neural interface.
Main Methods:
- Fabrication of a polymer-based shaft electrode.
- Integration of optical and fluidic channels within the electrode shaft.
- Simultaneous electrophysiological recording and optical/fluidic delivery capabilities.
Main Results:
- Successful fabrication of a multifunctional polymer-based neural probe.
- Demonstration of simultaneous light and fluid delivery to a target brain region.
- Simultaneous recording of electrical neural signals from the same tissue volume.
Conclusions:
- The developed multifunctional neural probe is a promising tool for in vivo optogenetics.
- This integrated probe simplifies experimental setups for neuroscience research.
- The device enables simultaneous optical control, fluid perfusion, and neural activity monitoring.
