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Updated: Feb 15, 2026
10:04
Construction of an Improved Multi-Tetrode Hyperdrive for Large-Scale Neural Recording in Behaving Rats
Published on: May 9, 2018
11.9K
A removable head-mounted microdrive for unit recording in the free-behaving rat
Physiology & Behavior
|November 1, 1984
Summary
This study details a new microdrive for precise, chronic unit recording in rat olfactory bulbs. The device allows for accurate electrode placement and movement in neural tissue.
Area of Science:
- Neuroscience
- Bioengineering
Background:
- Chronic unit recording is essential for understanding neural circuit function.
- Accurate electrode placement and stability are critical for high-quality neural recordings.
Purpose of the Study:
- To describe a novel, removable microdrive for chronic unit recording.
- To evaluate its performance in the olfactory bulbs of unrestrained rats.
Main Methods:
- A removable micromanipulator designed for tungsten microelectrodes.
- Stereotaxic exploration of cylindrical nervous tissue areas (9 mm high, 1.6 mm dia).
- Electrode movement with precision of 5 microns, minimal vibration, and no rotation.
Main Results:
- The microdrive has been successfully used for two years of chronic recording.
- Demonstrated precise electrode positioning and stable recordings in vivo.
- Suitable for long-term studies in awake, behaving animals.
Conclusions:
- The described microdrive is a reliable tool for chronic neural recordings.
- It facilitates precise, stable, and vibration-minimized electrode manipulation.
- Enables advanced research in olfactory bulb circuitry and function.
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