Months-long tracking of neuronal ensembles spanning multiple brain areas with Ultra-Flexible Tentacle Electrodes.


Journal

Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555

Informations de publication

Date de publication:
06 Jun 2024
Historique:
received: 13 12 2023
accepted: 24 05 2024
medline: 7 6 2024
pubmed: 7 6 2024
entrez: 6 6 2024
Statut: epublish

Résumé

We introduce Ultra-Flexible Tentacle Electrodes (UFTEs), packing many independent fibers with the smallest possible footprint without limitation in recording depth using a combination of mechanical and chemical tethering for insertion. We demonstrate a scheme to implant UFTEs simultaneously into many brain areas at arbitrary locations without angle-of-insertion limitations, and a 512-channel wireless logger. Immunostaining reveals no detectable chronic tissue damage even after several months. Mean spike signal-to-noise ratios are 1.5-3x compared to the state-of-the-art, while the highest signal-to-noise ratios reach 89, and average cortical unit yields are ~1.75/channel. UFTEs can track the same neurons across sessions for at least 10 months (longest duration tested). We tracked inter- and intra-areal neuronal ensembles (neurons repeatedly co-activated within 25 ms) simultaneously from hippocampus, retrosplenial cortex, and medial prefrontal cortex in freely moving rodents. Average ensemble lifetimes were shorter than the durations over which we can track individual neurons. We identify two distinct classes of ensembles. Those tuned to sharp-wave ripples display the shortest lifetimes, and the ensemble members are mostly hippocampal. Yet, inter-areal ensembles with members from both hippocampus and cortex have weak tuning to sharp wave ripples, and some have unusual months-long lifetimes. Such inter-areal ensembles occasionally remain inactive for weeks before re-emerging.

Identifiants

pubmed: 38844769
doi: 10.1038/s41467-024-49226-9
pii: 10.1038/s41467-024-49226-9
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

4822

Subventions

Organisme : EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council)
ID : 818179
Organisme : Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (Swiss National Science Foundation)
ID : CRSII5_198739/1
Organisme : Universität Zürich (University of Zurich)
ID : FK19-041

Informations de copyright

© 2024. The Author(s).

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Auteurs

Tansel Baran Yasar (TB)

Institute of Neuroinformatics, ETH Zurich & University of Zurich, Zurich, Switzerland.
Neuroscience Center Zurich, University of Zurich & ETH Zurich, Zurich, Switzerland.

Peter Gombkoto (P)

Institute of Neuroinformatics, ETH Zurich & University of Zurich, Zurich, Switzerland.
Neuroscience Center Zurich, University of Zurich & ETH Zurich, Zurich, Switzerland.

Alexei L Vyssotski (AL)

Institute of Neuroinformatics, ETH Zurich & University of Zurich, Zurich, Switzerland.
Neuroscience Center Zurich, University of Zurich & ETH Zurich, Zurich, Switzerland.

Angeliki D Vavladeli (AD)

Institute of Neuroinformatics, ETH Zurich & University of Zurich, Zurich, Switzerland.
Neuroscience Center Zurich, University of Zurich & ETH Zurich, Zurich, Switzerland.

Christopher M Lewis (CM)

Neuroscience Center Zurich, University of Zurich & ETH Zurich, Zurich, Switzerland.
Brain Research Institute, University of Zurich, Zurich, Switzerland.

Bifeng Wu (B)

Institute of Neuroinformatics, ETH Zurich & University of Zurich, Zurich, Switzerland.
Neuroscience Center Zurich, University of Zurich & ETH Zurich, Zurich, Switzerland.

Linus Meienberg (L)

Institute of Neuroinformatics, ETH Zurich & University of Zurich, Zurich, Switzerland.

Valter Lundegardh (V)

Institute of Neuroinformatics, ETH Zurich & University of Zurich, Zurich, Switzerland.

Fritjof Helmchen (F)

Neuroscience Center Zurich, University of Zurich & ETH Zurich, Zurich, Switzerland.
Brain Research Institute, University of Zurich, Zurich, Switzerland.
University Research Priority Program (URPP), Adaptive Brain Circuits in Development and Learning, University of Zurich, Zurich, Switzerland.

Wolfger von der Behrens (W)

Institute of Neuroinformatics, ETH Zurich & University of Zurich, Zurich, Switzerland.
Neuroscience Center Zurich, University of Zurich & ETH Zurich, Zurich, Switzerland.

Mehmet Fatih Yanik (MF)

Institute of Neuroinformatics, ETH Zurich & University of Zurich, Zurich, Switzerland. yanik@ethz.ch.
Neuroscience Center Zurich, University of Zurich & ETH Zurich, Zurich, Switzerland. yanik@ethz.ch.

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