Related Experiment Video
Updated: Mar 21, 2026
07:51
Acrylic Resin Molding Based Head Fixation Technique in Rodents
Published on: January 12, 2016
12.4K
Low profile halo head fixation in non-human primates
Kousha Azimi1, Ian A Prescott2, Robert A Marino2
1School of Medicine, Queen's University, Kingston, Ontario K7L 3N6, Canada.
Journal of Neuroscience Methods
|May 2, 2016
Summary
We developed a novel, low-profile halo device for stable head fixation in non-human primates, enabling high-quality electrophysiological recordings with immediate usability and enhanced skull access.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Surgical Techniques
Background:
- Electrophysiological recording experiments in non-human primates require stable head fixation.
- Previous halo designs have limitations in terms of profile, complexity, and usability.
Purpose of the Study:
- To develop an improved halo technique for head fixation in non-human primates.
- To create a simple, low-profile system offering long-term stability for electrophysiological recordings.
Main Methods:
- A new halo frame design with sharp skull pins directly threaded through.
- Implantation of titanium foot plates onto the skull for pin seating.
- Inwardly directed pins providing easily calibrated force against the skull.
Main Results:
- Achieved head fixation within one week post-surgery.
- Low-profile design maximized skull access and implant orientation options.
- Demonstrated stability in two animals over 6-8 months.
- Neural recording quality was comparable to traditional methods.
- Minimal MRI distortion observed with implanted foot plates.
Conclusions:
- The developed halo device offers stability, simplicity, and immediate usability.
- Its low-profile design enhances accessibility for electrophysiological experiments.
- This technique is a practical and useful advancement for primate research.
