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Related Experiment Video

Updated: Feb 2, 2026

Author Spotlight: Advancements in Multichannel Extracellular Recording for Studying Neuronal Activity in Freely Moving Mice
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Reusable Multielectrode Array Technique for Electroencephalography in Awake Freely Moving Mice.

Carrie R Jonak1, Jonathan W Lovelace1,2, Iryna M Ethell1,3

  • 1Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, CA, United States.

Frontiers in Integrative Neuroscience
|November 13, 2018
PubMed
Summary

Researchers developed a novel skull surface multielectrode array (MEA) for chronic, multisite electroencephalography (EEG) in mice. This reusable MEA system enables reliable, low-noise EEG recordings, crucial for studying neurological and neuropsychiatric diseases.

Keywords:
arraybiomarkerselectroencephalographyevent-related potentialsmultielectrode

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Area of Science:

  • Neuroscience
  • Biomedical Engineering

Background:

  • Translational research comparing rodent models to human electroencephalography (EEG) biomarkers requires robust rodent EEG methods.
  • Existing methods like electrocorticography (ECoG) or local field potential (LFP) recording have limitations for broad skull surface application.

Purpose of the Study:

  • To develop and validate a technique for chronic, multisite EEG recordings on the mouse skull surface.
  • To enable the use of EEG biomarkers in rodent models of neurological and neuropsychiatric diseases.
  • To demonstrate the reusability and cost-effectiveness of the developed multielectrode array (MEA) probes.

Main Methods:

  • Developed a planar multielectrode array (MEA) implantation technique for the mouse skull surface.
  • Enabled chronic implantation for awake, freely moving mice.
  • Demonstrated reusability of MEA probes for multiple serial implantations without compromising EEG quality.

Main Results:

  • Reliably obtained 30-channel, low-noise EEG recordings from awake mice.
  • Successfully recorded baseline and stimulus-evoked EEG, including auditory event-related potentials (ERPs) and phase-locked responses to chirp stimuli.
  • Confirmed no loss of EEG quality after MEA probe reuse.

Conclusions:

  • The developed skull surface MEA methodology provides a unique and effective approach for chronic, multisite EEG recordings in mice.
  • This technique facilitates the translational comparison of EEG biomarkers across rodent models and human conditions.
  • The reusability of MEA probes offers a cost-effective solution for extensive research applications in neuroscience.