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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| Main Authors: | , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
April 10, 2023
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| In: |
Current biology
Year: 2023, Volume: 33, Issue: 7, Pages: 1220-1236 |
| ISSN: | 1879-0445 |
| DOI: | 10.1016/j.cub.2023.02.029 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.cub.2023.02.029 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0960982223001690 
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| Author Notes: | Aleksander P.F. Domanski, Michal T. Kucewicz, Eleonora Russo, Mark D. Tricklebank, Emma S.J. Robinson, Daniel Durstewitz, and Matt W. Jones |
MARC
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| 245 | 1 | 0 | |a Distinct hippocampal-prefrontal neural assemblies coordinate memory encoding, maintenance, and recall |c Aleksander P.F. Domanski, Michal T. Kucewicz, Eleonora Russo, Mark D. Tricklebank, Emma S.J. Robinson, Daniel Durstewitz, and Matt W. Jones |
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| 520 | |a 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. | ||
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