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Distinct hippocampal-prefrontal neural assemblies coordinate memory encoding, maintenance, and recall

Short-term memory enables incorporation of recent experience into subsequent decision-making. This processing recruits both the prefrontal cortex and hippocampus, where neurons encode task cues, rules, and outcomes. However, precisely which information is carried when, and by which neurons, remains...

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Hauptverfasser: Domanski, Aleksander (VerfasserIn) , Kucewicz, Michal T. (VerfasserIn) , Russo, Eleonora (VerfasserIn) , Tricklebank, Mark D. (VerfasserIn) , Robinson, Emma S. J. (VerfasserIn) , Durstewitz, Daniel (VerfasserIn) , Jones, Matt W. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: April 10, 2023
In: Current biology
Year: 2023, Jahrgang: 33, Heft: 7, Pages: 1220-1236
ISSN:1879-0445
DOI:10.1016/j.cub.2023.02.029
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.cub.2023.02.029
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0960982223001690
Volltext
Verfasserangaben:Aleksander P.F. Domanski, Michal T. Kucewicz, Eleonora Russo, Mark D. Tricklebank, Emma S.J. Robinson, Daniel Durstewitz, and Matt W. Jones
Beschreibung
Zusammenfassung:Short-term memory enables incorporation of recent experience into subsequent decision-making. This processing recruits both the prefrontal cortex and hippocampus, where neurons encode task cues, rules, and outcomes. However, precisely which information is carried when, and by which neurons, remains unclear. Using population decoding of activity in rat medial prefrontal cortex (mPFC) and dorsal hippocampal CA1, we confirm that mPFC populations lead in maintaining sample information across delays of an operant non-match to sample task, despite individual neurons firing only transiently. During sample encoding, distinct mPFC subpopulations joined distributed CA1-mPFC cell assemblies hallmarked by 4-5 Hz rhythmic modulation; CA1-mPFC assemblies re-emerged during choice episodes but were not 4-5 Hz modulated. Delay-dependent errors arose when attenuated rhythmic assembly activity heralded collapse of sustained mPFC encoding. Our results map component processes of memory-guided decisions onto heterogeneous CA1-mPFC subpopulations and the dynamics of physiologically distinct, distributed cell assemblies.
Beschreibung:Gesehen am 01.08.2023
Beschreibung:Online Resource
ISSN:1879-0445
DOI:10.1016/j.cub.2023.02.029

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