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Related Experiment Video

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High-Quality Seizure-Like Activity from Acute Brain Slices Using a Complementary Metal-Oxide-Semiconductor

Melissa L Blotter1, Isaac W Stubbs1, Jacob H Norby1

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Journal of Visualized Experiments : Jove
|October 14, 2024
PubMed
Summary

This study presents a protocol for reliably inducing and recording high-quality seizure-like activity using Complementary metal-oxide-semiconductor high-density microelectrode array (CMOS-HD-MEA) systems. The methods improve upon existing techniques for electrophysiological recordings from brain slices.

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Area of Science:

  • Neuroscience
  • Electrophysiology
  • Biomedical Engineering

Background:

  • Complementary metal-oxide-semiconductor high-density microelectrode array (CMOS-HD-MEA) systems offer high-resolution neurophysiological recordings.
  • Previous applications focused on cell cultures and acute slices, with limited success in reliably inducing seizure-like activity in cortical slices.
  • Existing methods face challenges like electrical noise and limitations of 2D recording.

Purpose of the Study:

  • To develop a reliable protocol for inducing and recording high-quality seizure-like activity from acute brain slices using CMOS-HD-MEA systems.
  • To address the difficulties researchers face in generating consistent epileptiform discharges.
  • To provide comprehensive guidance on experimental procedures and equipment management.

Main Methods:

  • Detailed techniques for consistently inducing seizure-like activity in acute brain slices.
  • Optimization of Complementary metal-oxide-semiconductor high-density microelectrode array (CMOS-HD-MEA) usage for local field potential (LFP) recordings.
  • Protocols for slice preparation, solution management, and equipment maintenance.

Main Results:

  • Successful and consistent induction of high-quality seizure-like activity in acute cortical brain slices.
  • Improved electrophysiological data quality for local field potential (LFP) analysis.
  • Demonstrated reliability in capturing epileptiform discharges using the developed protocol.

Conclusions:

  • The protocol enables consistent and high-quality recording of seizure-like activity with CMOS-HD-MEA systems.
  • This advancement facilitates more robust research into the mechanisms of epilepsy and related neurological disorders.
  • The study provides a valuable resource for researchers utilizing CMOS-HD-MEA technology for brain slice electrophysiology.