In vivo recordings in freely behaving mice using independent silicon probes targeting multiple brain regions

recordings in freely behaving animals are crucial to understand the neuronal circuit basis of behavior. Although current multi-channel silicon probes provide unparalleled sampling density, the study of interacting neuronal populations requires the implantation of multiple probes across different reg...

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Bibliographic Details
Published in:Frontiers in neural circuits 2023-12, Vol.17, p.1293620-1293620
Main Authors: Ferreira-Fernandes, Emanuel, Laranjo, Mariana, Reis, Tiago, Canijo, Bárbara, Ferreira, Pedro A, Martins, Pedro, Vilarinho, João, Tavakoli, Mahmoud, Kunicki, Carolina, Peça, João
Format: Article
Language:English
Subjects:
Adhesives
Aluminum
Animals
Behavior
Brain
Cerebral Cortex
Headgear
Hippocampus
in vivo electrophysiology
Laboratories
methodology
Mice
mouse model
Neuroscience
Population studies
prefrontal cortex
Probes
Silicon
silicon probes
Transplants & implants
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Summary:recordings in freely behaving animals are crucial to understand the neuronal circuit basis of behavior. Although current multi-channel silicon probes provide unparalleled sampling density, the study of interacting neuronal populations requires the implantation of multiple probes across different regions of the brain. Ideally, these probes should be independently adjustable, to maximize the yield, and recoverable, to mitigate costs. In this work, we describe the implementation of a miniaturized 3D-printed headgear system for chronic recordings in mice using independently movable silicon probes targeting multiple brain regions. We successfully demonstrated the performance of the headgear by simultaneously recording the neuronal activity in the prelimbic cortex and dorsal hippocampus. The system proved to be sturdy, ensuring high-quality stable recordings and permitted reuse of the silicon probes, with no observable interference in mouse innate behaviors.
ISSN:1662-5110
1662-5110
DOI:10.3389/fncir.2023.1293620