Brain Inspired Navigation Blog

Category: Spatial Memory

How new learning affects a previously acquired spatial memory representation?

Samuel J Levy, Michael E Hasselmo. Hippocampal remapping induced by new behavior is mediated by spatial context. bioRxiv 2023.02.20.529330; doi: https://doi.org/10.1101/2023.02.20.529330

Abstract
“The hippocampus plays a central role in episodic memory and spatial navigation. Hippocampal neurons form unique representational …

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How collective hippocampal coding properties facilitate the stability or precision of the neural code?

Sheintuch, Liron, Nitzan Geva, Daniel Deitch, Alon Rubin, and Yaniv Ziv. “Organization of hippocampal CA3 into correlated cell assemblies supports a stable spatial code.” Cell Reports 42, no. 2 (2023).

Summary
“Hippocampal subfield CA3 is thought to …

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How the brain avoid systematic erasing of previously encoded memories?

Irene Navarro-Lobato, Adrian Aleman-Zapata, Anumita Samanta, Milan Bogers, Shekhar Narayanan, Abdelrahman Rayan, Alejandra Alonso, Jacqueline van der Meij, Mehdi Khamassi, Zafar Khan, Lisa Genzel. Learning Fast and Slow: Increased cortical plasticity leads to memory interference and enhanced hippocampal-cortical interactions. …

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How unique and predictable elements of memories are stored and reconstructed by efficiently combining both hippocampal and neocortical systems？

Eleanor Spens, Neil Burgess. A Generative Model of Memory Construction and Consolidation. bioRxiv 2023.01.19.524711; doi: https://doi.org/10.1101/2023.01.19.524711

Abstract
“Human episodic memories are (re)constructed, combining unique features with schema-based predictions, and share neural substrates with imagination. They also show systematic schema-based …

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Whether, and how, replay supports both future planning and preserving memories of the past？

G. Elliott Wimmer, Yunzhe Liu, Daniel C. McNamee, and Raymond J. Dolan. Distinct replay signatures for prospective decision-making and memory preservation. PNAS, 120 (6) e2205211120, 2023. 

Significance
“The sequential neural reactivation of prior experience, known as replay, is …

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How episodic memories are stored within brains?

Sachin P Vaidya, Raymond A Chitwood, Jeffrey C Magee. The formation of an expanding memory representation in the hippocampus. bioRxiv 2023.02.01.526663; doi: https://doi.org/10.1101/2023.02.01.526663

Abstract
“How episodic memories are stored within brains is poorly understood. While certain memory-retaining …

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Do artificial intelligence (AI) agents learn to build internal spatial representations (or ‘mental’ maps) of their environment as a natural consequence of learning to navigate?

Erik Wijmans, Manolis Savva, Irfan Essa, Stefan Lee, Ari S. Morcos, Dhruv Batra. Emergence of Maps in the Memories of Blind Navigation Agents. arXiv:2301.13261 [cs.AI], 2023. 

Abstact
“Animal navigation research posits that organisms build and maintain internal spatial representations, …

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How navigation and memory processes interact in humans?

Thomas Schreiner, Benjamin J. Griffiths, Merve Kutlu, Christian Vollmar, Elisabeth Kaufmann, Stefanie Quach, Jan Remi, Soheyl Noachtar, Tobias Staudigl. Memory reactivation of real-world spatial orientation revealed by human electrophysiology. bioRxiv 2023.01.27.525854; doi: https://doi.org/10.1101/2023.01.27.525854

Abstract
“Spatial navigation and memory …

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How the hippocampus incorporates new contextual information into a previously formed and stabilized spatial representation?

Jake Ormond, Simon A. Serka, Joshua P. Johansen. Enhanced reactivation of remapping place cells during aversive learning. Journal of Neuroscience 3 January 2023, JN-RM-1450-22; DOI: 10.1523/JNEUROSCI.1450-22.2022

Abstract
“Study of the hippocampal place cell system has greatly enhanced our …

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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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How the cross-modal identity of multiple conspecifics are represented in the marmoset hippocampus?

Timothy J Tyree, Michael Metke, Cory T Miller. Cross-Modal Representation of Identity in Primate Hippocampus. bioRxiv 2022.09.12.507611; doi: https://doi.org/10.1101/2022.09.12.507611

Abstract
“Faces and voices are the dominant social signals used to recognize individuals amongst human and nonhuman primates 1–5. Yet, …

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What is known about the role of the hippocampus in processing auditory information, and how the hippocampus itself is shaped by sound?

Alexander J. Billig, Meher Lad, William Sedley, Timothy D. Griffiths. The hearing hippocampus. Progress in Neurobiology, Volume 218, 2022, 102326.

Abstract
“The hippocampus has a well-established role in spatial and episodic memory but a broader function has been …

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Brain Inspired Navigation Blog

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