Category: Cognitive Map

Whether hippocampal time cells represent context-dependent experience or time per se?

David B. Omer, Liora Las & Nachum Ulanovsky. Contextual and pure time coding for self and other in the hippocampus. Nat Neurosci (2022). https://doi.org/10.1038/s41593-022-01226-y

Abstract
“Navigation and episodic memory depend critically on representing temporal sequences. Hippocampal ‘time cells’ form

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How hippocampal neural circuits achieve efficient spatial representations using dynamic hyperbolic geometry?

Huanqiu Zhang, P. Dylan Rich, Albert K. Lee & Tatyana O. Sharpee. Hippocampal spatial representations exhibit a hyperbolic geometry that expands with experience. Nat Neurosci (2022). https://doi.org/10.1038/s41593-022-01212-4

Abstract
Daily experience suggests that we perceive distances near us linearly.

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How the activity of single grid cells is related to the sum activity of a population of grid cells?

Ikhwan Bin Khalid, Eric T. Reifenstein, Naomi Auer, Lukas Kunz, Richard Kempter. Quantitative modeling of the emergence of macroscopic grid-like representations. bioRxiv 2022.12.20.521210; doi: https://doi.org/10.1101/2022.12.20.521210

Abstract
Grid cells are neurons in the entorhinal cortex that play a key

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How does the cortex retrieve episodic memories from the hippocampus during memory consolidation?

HaoRan Chang, Ingrid M. Esteves, Adam R. Neumann, Majid H. Mohajerani, Bruce L. McNaughton. Cortical Reactivation of Non-Spatial and Spatial Memory Representations Coordinate with Hippocampus to Form a Memory Dialogue. bioRxiv 2022.12.16.520658; doi: https://doi.org/10.1101/2022.12.16.520658

Abstract
“Episodic memory depends on …

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How dopamine promotes head direction plasticity during orienting movements?

Yvette E. Fisher, Michael Marquis, Isabel D’Alessandro& Rachel I. Wilson. Dopamine promotes head direction plasticity during orienting movements. Nature (2022). https://doi.org/10.1038/s41586-022-05485-4

Abstract
In neural networks that store information in their connection weights, there is a tradeoff between sensitivity

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Whether associative memory involves precisely timed spiking of neurons in the medial temporal lobes that exhibit stimulus-specific tuning?

Lukas Kunz, Bernhard P Staresina, Peter C Reinacher, Armin Brandt, Tim A Guth, Andreas Schulze-Bonhage, Joshua Jacobs. Ripple-locked coactivity of stimulus-specific neurons supports human associative memory. bioRxiv 2022.10.17.512635; doi: https://doi.org/10.1101/2022.10.17.512635

Abstract
Associative memory is the ability to encode

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How to integrate new memories into the hippocampal network activity space?

Gava, G.P., McHugh, S.B., Lefèvre, L. et al. Integrating new memories into the hippocampal network activity space. Nat Neurosci 24, 326–330 (2021). https://doi.org/10.1038/s41593-021-00804-w

Abstract
“By investigating the topology of neuronal co-activity, we found that mnemonic information spans multiple operational …

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