Regulation of Hippocampal Gamma Oscillations by Modulation of Intrinsic Neuronal Excitability.


Journal

Frontiers in neural circuits
ISSN: 1662-5110
Titre abrégé: Front Neural Circuits
Pays: Switzerland
ID NLM: 101477940

Informations de publication

Date de publication:
2021
Historique:
received: 16 09 2021
accepted: 21 12 2021
entrez: 18 2 2022
pubmed: 19 2 2022
medline: 6 4 2022
Statut: epublish

Résumé

Ion channels activated around the subthreshold membrane potential determine the likelihood of neuronal firing in response to synaptic inputs, a process described as intrinsic neuronal excitability. Long-term plasticity of chemical synaptic transmission is traditionally considered the main cellular mechanism of information storage in the brain; however, voltage- and calcium-activated channels modulating the inputs or outputs of neurons are also subjects of plastic changes and play a major role in learning and memory formation. Gamma oscillations are associated with numerous higher cognitive functions such as learning and memory, but our knowledge of their dependence on intrinsic plasticity is by far limited. Here we investigated the roles of potassium and calcium channels activated at near subthreshold membrane potentials in cholinergically induced persistent gamma oscillations measured in the CA3 area of rat hippocampal slices. Among potassium channels, which are responsible for the afterhyperpolarization in CA3 pyramidal cells, we found that blockers of SK (K

Identifiants

pubmed: 35177966
doi: 10.3389/fncir.2021.778022
pmc: PMC8845518
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

778022

Informations de copyright

Copyright © 2022 Klemz, Wildner, Tütüncü and Gerevich.

Déclaration de conflit d'intérêts

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

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Auteurs

Alexander Klemz (A)

Institute of Neurophysiology, Charité-Universitätsmedizin, Berlin, Germany.

Florian Wildner (F)

Institute of Neurophysiology, Charité-Universitätsmedizin, Berlin, Germany.

Ecem Tütüncü (E)

Institute of Neurophysiology, Charité-Universitätsmedizin, Berlin, Germany.

Zoltan Gerevich (Z)

Institute of Neurophysiology, Charité-Universitätsmedizin, Berlin, Germany.

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