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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What’s the neural coding of 3D spatial location, orientation, and action selection in echolocating bats?

Salles, Angeles, Melville J. Wohlgemuth, and Cynthia F. Moss. “Neural coding of 3D spatial location, orientation, and action selection in echolocating bats.” Trends in Neurosciences (2022).

Abstract
“Echolocating bats are among the only mammals capable of powered flight, …

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What’s the role of the lateral orbitofrontal cortex in creating cognitive maps?

Kauê Machado Costa, Robert Scholz, Kevin Lloyd, Perla Moreno-Castilla, Matthew P. H. Gardner, Peter Dayan & Geoffrey Schoenbaum. The role of the lateral orbitofrontal cortex in creating cognitive maps. Nat Neurosci (2022). https://doi.org/10.1038/s41593-022-01216-0

Abstract
We use mental models

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How the escape circuit incorporates spatial information to execute rapid flights along the most efficient route to shelter?

Dario Campagner, Ruben Vale, Yu Lin Tan, Panagiota Iordanidou, Oriol Pavón Arocas, Federico Claudi, A. Vanessa Stempel, Sepiedeh Keshavarzi, Rasmus S. Petersen, Troy W. Margrie & Tiago Branco. A cortico-collicular circuit for orienting to shelter during escapeNature (2022). …

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How neurons encode variables during goal-directed navigation in environments that dynamically change?

Alexander Gonzalez, Lisa M Giocomo. Parahippocampal neurons encode task-relevant information for goal-directed navigation. bioRxiv 2022.12.15.520660; doi: https://doi.org/10.1101/2022.12.15.520660

Abstract
“A behavioral strategy crucial to survival is directed navigation to a goal, such as a food or home location. One potential

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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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How direct cortical inputs to hippocampal area CA1 transmit complementary signals for goal-directed navigation?

John C Bowler, Attila Losonczy. Direct Cortical Inputs to Hippocampal Area CA1 Transmit Complementary Signals for Goal-directed Navigation. bioRxiv 2022.11.10.516009; doi: https://doi.org/10.1101/2022.11.10.516009

Summary
“The entorhinal cortex (EC) is central to the brain’s navigation system. Its subregions are conventionally thought …

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How does the brain transform a head direction signal into a goal-oriented steering command?

Elena A. Westeinde, Emily Kellogg, Paul M. Dawson, Jenny Lu, Lydia Hamburg, Benjamin Midler, Shaul Druckmann, Rachel I. Wilson. Transforming a head direction signal into a goal-oriented steering command. bioRxiv 2022.11.10.516039; doi: https://doi.org/10.1101/2022.11.10.516039

Abstract
To navigate, we must

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When and why grid cells appear or not in trained path integrators?

Ben Sorscher, Gabriel C Mel, Aran Nayebi, Lisa Giocomo, Daniel Yamins, Surya Ganguli. When and why grid cells appear or not in trained path integrators. bioRxiv 2022.11.14.516537; doi: https://doi.org/10.1101/2022.11.14.516537

Abstract
“Recent work has claimed that the emergence of grid …

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How egocentric and allocentric reference frames are chosen and interact in navigation tasks, as well as how they are supported by representations in the brain?

Vijayabaskaran S, Cheng S (2022) Navigation task and action space drive the emergence of egocentric and allocentric spatial representations. PLoS Comput Biol 18(10): e1010320. https://doi.org/10.1371/journal.pcbi.1010320

Abstract
In general, strategies for spatial navigation could employ one of two spatial

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How entorhinal cortex directs learning-related changes in CA1 representations?

Christine Grienberger, Jeffrey C. Magee. Entorhinal cortex directs learning-related changes in CA1 representations. Nature (2022). https://doi.org/10.1038/s41586-022-05378-6

Abstract
Learning-related changes in brain activity are thought to underlie adaptive behaviours1,2. For instance, the learning of a reward site by …

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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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