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Chronic wireless neural population recordings with common marmosets
Jeffrey D Walker1, Friederice Pirschel2, Marina Sundiang3
1Committee on Computational Neuroscience, University of Chicago, Chicago, IL 60615, USA; Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL 60615, USA.
Cell Reports
|July 14, 2021
Summary
We developed a novel method to record neural activity in unrestrained marmosets, enabling long-term study of brain function during natural behaviors and sleep. This advances neuroscience research in this key primate model.
Area of Science:
- Neuroscience
- Primate Models
- Neurophysiology
Background:
- Marmosets are valuable neuroscience models due to genetic tractability and accessible brains.
- Current neural recording techniques often restrict natural behaviors, limiting insights.
- There is a need for methods allowing neural recordings in unrestrained marmosets.
Purpose of the Study:
- To develop and validate a method for long-term neural population recording in freely moving marmosets.
- To enable the study of neural activity across diverse natural behaviors and brain states.
- To overcome limitations of existing primate neurophysiology techniques.
Main Methods:
- Developed a flexible surgical and implantation technique for chronic neural recordings.
- Utilized custom-designed electrode arrays and recording systems.
- Recorded sensorimotor cortical activity in marmosets during natural behaviors and sleep.
Main Results:
- Successfully recorded neural population activity in unrestrained marmosets over multiple years.
- Demonstrated the ability to capture neural dynamics across a wide range of natural behaviors.
- Validated the method's utility during both active behaviors and sleep states.
Conclusions:
- The developed method allows for unprecedented neurophysiological insights in marmosets.
- This technique supports long-term, multi-behavioral, and multi-state neural recordings.
- It significantly enhances the utility of marmosets as a model system for systems neuroscience.
