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Updated: Jul 11, 2026
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A Procedure for Implanting Organized Arrays of Microwires for Single-unit Recordings in Awake, Behaving Animals
Published on: February 14, 2014
Compact movable microwire array for long-term chronic unit recording in cerebral cortex of primates
Andrew Jackson1, Eberhard E Fetz
1School of Neurology, Neurobiology and Psychiatry, University of Newcastle, Newcastle-upon-Tyne, United Kingdom. andrew.jackson@ncl.ac.uk
Journal of Neurophysiology
|September 15, 2007
Summary
Researchers developed a novel microwire array for long-term brain recordings in primates. This technology enables stable single-neuron activity monitoring for extended periods, crucial for studying learning and neural plasticity.
Area of Science:
- Neuroscience
- Biomedical Engineering
Background:
- Long-term neural recordings are essential for understanding brain function.
- Existing technologies often face challenges with signal stability and cell loss over time.
Purpose of the Study:
- To present a small, chronically implantable microwire array for long-term unit recordings.
- To demonstrate the array's capability for stable recordings from the cortex of unrestrained nonhuman primates.
Main Methods:
- Implantation of a microwire array into the primary motor cortex of nonhuman primates.
- Individual adjustment of microwire depth to maintain recordings.
- Autonomous on-board electronic circuitry for data acquisition.
- Analysis of neuronal waveform stability and signal-to-noise ratios.
Main Results:
- Achieved stable, large-amplitude action potential recordings from single neurons over many months.
- Demonstrated stable neuronal waveforms for several weeks during unrestrained behavior.
- Reported favorable signal-to-noise ratios and low rates of cell loss.
Conclusions:
- The microwire array facilitates long-term, high-quality unit recordings from the primate cortex.
- This method is suitable for investigating neural correlates of processes like learning and plasticity over extended durations.
