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Related Experiment Video

Updated: May 9, 2026

Construction and Implementation of Carbon Fiber Microelectrode Arrays for Chronic and Acute In Vivo Recordings
07:37

Construction and Implementation of Carbon Fiber Microelectrode Arrays for Chronic and Acute In Vivo Recordings

Published on: August 5, 2021

A carbon-fiber electrode array for long-term neural recording.

Grigori Guitchounts1, Jeffrey E Markowitz, William A Liberti

  • 1Department of Biology, Boston University, 24 Cummington Mall, Boston, MA 02215, USA.

Journal of Neural Engineering
|July 18, 2013
PubMed
Summary

New carbon fiber electrode arrays enable stable, long-term neural recordings in small, densely packed neurons. This breakthrough facilitates chronic neural recording for studying neural circuits over months, crucial for learning research.

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Area of Science:

  • Neuroscience
  • Bioengineering
  • Animal Behavior

Background:

  • Chronic neural recording is vital for understanding neural circuit function in behaving animals.
  • Stable recording from small, densely packed neurons over extended periods, especially relevant for learning studies, remains a significant challenge.

Purpose of the Study:

  • To develop and evaluate a novel electrode array for stable, long-term neural recordings.
  • To address the limitations of current technologies in recording from small, densely packed neurons.

Main Methods:

  • An assembly method for a 16-channel electrode array using individually insulated and fire-sharpened carbon fibers (<5 µm diameter).
  • The electrode array has an approximate diameter of 26 µm.
  • Tested in the HVC (used as a proper name) region of singing zebra finches.

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Open-source Toolkit: Benchtop Carbon Fiber Microelectrode Array for Nerve Recording
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Published on: October 29, 2021

Chronic Implantation of Multiple Flexible Polymer Electrode Arrays
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Chronic Implantation of Multiple Flexible Polymer Electrode Arrays

Published on: October 4, 2019

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Last Updated: May 9, 2026

Construction and Implementation of Carbon Fiber Microelectrode Arrays for Chronic and Acute In Vivo Recordings
07:37

Construction and Implementation of Carbon Fiber Microelectrode Arrays for Chronic and Acute In Vivo Recordings

Published on: August 5, 2021

Open-source Toolkit: Benchtop Carbon Fiber Microelectrode Array for Nerve Recording
07:50

Open-source Toolkit: Benchtop Carbon Fiber Microelectrode Array for Nerve Recording

Published on: October 29, 2021

Chronic Implantation of Multiple Flexible Polymer Electrode Arrays
08:54

Chronic Implantation of Multiple Flexible Polymer Electrode Arrays

Published on: October 4, 2019

Main Results:

  • Carbon fiber electrodes provided stable multi-unit recordings for months in the HVC.
  • Spike-sorting analysis indicated that recordings were dominated by one or a few cells.
  • Stable firing patterns during singing confirmed the long-term stability of recorded neural clusters.
  • Single-cell recordings of projection neurons were unambiguously confirmed.

Conclusions:

  • Carbon fiber electrode bundles offer a scalable solution for long-term neural recordings.
  • This technology can overcome challenges in recording from small, densely packed neurons.