Category: Cognitive Map

What are the mechanisms of memory-supporting neuronal dynamics in hippocampal area CA3?

Li, Yiding, John J. Briguglio, Sandro Romani, Jeffrey C. Magee, Eddy Kinganda-Lusamaki, Adrienne Amuri-Aziza, Nicolas Fernandez-Nuñez et al. “Mechanisms of memory-supporting neuronal dynamics in hippocampal area CA3.” Cell 187 (2024): 2030-2051.

 

Summary
Hippocampal CA3 is central to

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How memory and language are linked at the single-cell level?

D. E. Dijksterhuis et al. ,Pronouns reactivate conceptual representations in human hippocampal neurons.Science 385,1478-1484(2024).DOI:10.1126/science.adr2813

Abstract
“During discourse comprehension, every new word adds to an evolving representation of meaning that accumulates over consecutive sentences and constrains the next words

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How shifts in the composition of memory-encoding neuronal ensembles influence the evolution of a memory over time?

Vilde A. Kveim et al. ,Divergent recruitment of developmentally defined neuronal ensembles supports memory dynamics.Science 385,eadk0997(2024).DOI:10.1126/science.adk0997

Editor’s summary
Memories are not fixed; they evolve after encoding and their content can be updated upon changes in external or

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Whether the entorhinal grid system is also involved in predicting where an animal will be in the next moment?

Ayako Ouchi, Shigeyoshi Fujisawa ,Predictive grid coding in the medial entorhinal cortex.Science 385,776-784(2024).DOI:10.1126/science.ado4166

Editor’s summary
Grid cells in the entorhinal cortex create a coordinate system of the environment for spatial navigation. However, it is not clear whether

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How abstract representations are encoded in populations of hippocampal neurons, how they emerge through learning and how they relate to behaviour?

Courellis, H.S., Minxha, J., Cardenas, A.R. et al. Abstract representations emerge in human hippocampal neurons during inference. Nature (2024). https://doi.org/10.1038/s41586-024-07799-x

Abstract
Humans have the remarkable cognitive capacity to rapidly adapt to changing environments. Central to this capacity …

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How the hippocampus supports episodic and spatial memory at the same time?

Alexander Nitsch, Naomi de Haas, Mona M. Garvert, Christian F. Doeller. Integrating episodic and spatial context signals in the hippocampus. bioRxiv 2024.06.24.600445; doi: https://doi.org/10.1101/2024.06.24.600445

Abstract
Episodic and spatial memory are the two key components of the mnemonic system

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How hippocampal-entorhinal cognitive maps and cortical motor system represent action plans and their outcomes?

Irina Barnaveli, Simone Viganò, Daniel Reznik, Patrick Haggard, Christian F. Doeller. Hippocampal-entorhinal cognitive maps and cortical motor system represent action plans and their outcomes. bioRxiv 2024.07.04.602119; doi: https://doi.org/10.1101/2024.07.04.602119

Efficiently interacting with the environment requires weighing and selecting among

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Whether and how neural dynamics of hippocampal neurons are influenced by the presence and actions of human experimenters?

Snyder, M.C., Qi, K.K. & Yartsev, M.M. Neural representation of human experimenters in the bat hippocampusNat Neurosci (2024). https://doi.org/10.1038/s41593-024-01690-8

Abstract
“Here we conducted wireless electrophysiological recording of hippocampal neurons from Egyptian fruit bats in the presence of human

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How the hippocampus represents different spaces?

Fenton, A.A. Remapping revisited: how the hippocampus represents different spaces. Nat. Rev. Neurosci. (2024). https://doi.org/10.1038/s41583-024-00817-x

Abstract
The representation of distinct spaces by hippocampal place cells has been linked to changes in their place fields (the locations in the …

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How the medial entorhinal cortex develops during learning and influences memory?

Malone, T.J., Tien, NW., Ma, Y. et al. A consistent map in the medial entorhinal cortex supports spatial memoryNat Commun 15, 1457 (2024). https://doi.org/10.1038/s41467-024-45853-4

Abstract
The medial entorhinal cortex (MEC) is hypothesized to function as a

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How place cells use environmental cues to resolve the ambiguity of arotationally symmetric environment?

Cheng, Han Yin, Dorothy W. Overington, and Kate J. Jeffery. “A configural context signal simultaneously but separably drives positioning and orientation of hippocampal place fields.” Hippocampus 34.2 (2024): 73-87.

Abstract
Effective self-localization requires that the brain can

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Whether animals can intentionally control their hippocampal activity according to their model of the world

Chongxi Lai et al., Volitional activation of remote place representations with a hippocampal brain–machine interface. Science382,566-573(2023).DOI:10.1126/science.adh5206

Editor’s summary

“The hippocampus holds a model of the environment that can be mentally traversed during recall or simulation. …

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How hippocampal activity relates to spatial behaviour in dynamic and ethologically relevant group settings?

Forli, A., Yartsev, M.M. Hippocampal representation during collective spatial behaviour in batsNature (2023). https://doi.org/10.1038/s41586-023-06478-7

Abstract
Social animals live and move through spaces shaped by the presence, motion and sensory cues of multiple other individuals1,2,3,4,5,6. Neural activity

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How the cortical circuits integrate vestibular and visual cues for navigation, visual processing, and perception?

Sepiedeh Keshavarzi, Mateo Velez-Fort, and Troy W. Margrie. Cortical Integration of Vestibular and Visual Cues for Navigation, Visual Processing, and Perception. Annual Review of Neuroscience, Vol. 46:301-320, July 2023. https://doi.org/10.1146/annurev-neuro-120722-100503

Abstract
“Despite increasing evidence of its involvement in several …

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How the hippocampus supports real-world navigation in humans?

Kathryn N. Graves, Ariadne Letrou, Tyler E. Gray, Imran H. Quraishi, Nicholas B. Turk-Browne. Hippocampal Codes for Real-World Human Navigation. bioRxiv 2023.06.22.545396; doi: https://doi.org/10.1101/2023.06.22.545396

Abstract
“As animals move through the world, the hippocampus represents their location, direction, and speed

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