Related Experiment Video
Updated: Apr 11, 2026
07:52
Multiscale Investigations of Cortical Processing by Integrating Laminar Polytrodes and Optogenetics with Micro Electrocorticography in Rodents
Published on: May 23, 2025
977
A hybrid micro-ECoG for functionally targeted multi-site and multi-scale investigation.
Patrick Jendritza1,2,3,4,5, Rickard Liljemalm6, Thomas Stieglitz7
1Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Deutschordenstraße 46, 60528 Frankfurt, Germany.
Biorxiv : the Preprint Server for Biology
|April 10, 2026
Summary
New hybrid micro-electrocorticography (µECoG) arrays enable simultaneous multi-scale brain recordings. These tools map brain activity and target specific neural populations for advanced systems neuroscience research.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Systems Neuroscience
Background:
- Coordinated brain activity across scales is crucial for function.
- Understanding whole-brain dynamics requires tools to record from distributed, connected populations.
- Current tools limit the ability to bridge local and global neural activity.
Purpose of the Study:
- To introduce novel high-density, hybrid micro-electrocorticography (µECoG) arrays.
- To demonstrate the arrays' capability for multi-scale brain activity studies.
- To showcase their utility in functional mapping and targeted neural recordings.
Main Methods:
- Development of hybrid µECoG arrays integrating silicone elastomers and polyimide films.
- Utilizing photolithography for fine feature definition and optical transparency.
- Demonstrating functional mapping in rats, cats, and marmosets.
- Employing arrays for targeted insertion of depth electrodes for dense local sampling.
- Integrating optogenetic stimulation for investigating cortico-cortical interactions.
Main Results:
- Hybrid µECoG arrays facilitate high-throughput functional mapping of cortical regions.
- Functional maps enable precise targeting of neural populations for multi-area laminar recordings.
- Arrays support local optogenetic stimulation and investigation of feedforward cortico-cortical interactions.
- Demonstrated suitability across multiple species (rats, cats, marmosets).
Conclusions:
- Hybrid µECoG arrays are a versatile tool for systems neuroscience.
- They bridge local and global brain dynamics by enabling multi-scale recordings.
- These arrays advance the study of integrated brain function and neural circuitries.
