Article
Neurosciences
Liwei Sun, Sebastian M. Frank, Russell A. Epstein, Peter U. Tse
Summary: Research using fMRI and MVPA found that the right parahippocampal place area and hippocampus encode the spatial significance of landmark objects in indoor spaces, with the neural representation of these objects systematically transforming according to their locations.
Article
Multidisciplinary Sciences
Lu Zhang, Stephanie M. Prince, Abigail L. Paulson, Annabelle C. Singer
Summary: This study investigates the role of nonplace cells in memory-guided navigation when spatial cues provide ambiguous information. It is found that nonplace cells differentiate between ambiguous spatial cues and show altered activity and modulation at task-relevant cues. This discrimination is absent in a mouse model of Alzheimer's disease.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Editorial Material
Neurosciences
Kay Thurley
Summary: Place cells in the hippocampus process both path integration signals and sensory information about landmarks. A recent study demonstrates how localized olfactory cues interact with path integration to drive place cells, effectively turning these cues into landmarks.
Review
Behavioral Sciences
Azul Silva, Maria Cecilia Martinez
Summary: When navigating different contexts, our brain builds a cognitive map to internally represent the territory. Spatial navigation involves complex information processing and integration, with place cells, grid cells, and other neurons forming a neural network critical for self-position and spatial memory. Alzheimer's disease (AD), a neurodegenerative disorder affecting the hippocampus-entorhinal cortex (HP-EC) circuit, results in spatial memory deficits and disorientation. Recent studies suggest impairment in spatial information encoding as a possible mechanism, and virtual reality shows promise for early diagnosis and rehabilitation.
FRONTIERS IN BEHAVIORAL NEUROSCIENCE
(2023)
Article
Cell Biology
Roland Zemla, Jason J. Moore, Maya D. Hopkins, Jayeeta Basu
Summary: Decades of research have shown that hippocampal activity plays a crucial role in representing learned experiences and contexts, allowing individuals to form long-term memories and adapt behavior to changing environments. Recent studies suggest that hippocampal representations can drift over time, but it is hypothesized that learning rules and structured attention can stabilize these representations and maintain stable memories.
Article
Biology
Marcia Becu, Denis Sheynikhovich, Stephen Ramanoel, Guillaume Tatur, Anthony Ozier-Lafontaine, Colas N. Authie, Jose-Alain Sahel, Angelo Arleo
Summary: The study challenges the hypothesis that allocentric spatial coding develops later and deteriorates earlier than egocentric spatial coding. The use of landmarks for navigation is difficult for children and aged individuals, but introducing geometric cues can improve their allocentric navigation performance. Landmark processing follows an inverted-U dependence on age, while spatial geometry processing is conserved.
Article
Robotics
Fangwen Yu, Yujie Wu, Songchen Ma, Mingkun Xu, Hongyi Li, Huanyu Qu, Chenhang Song, Taoyi Wang, Rong Zhao, Luping Shi
Summary: The research report introduces a brain-inspired general place recognition system called NeuroGPR, which enables robots to recognize places in natural environments by mimicking the neural mechanism of multimodal sensing, encoding, and computing. The system utilizes a multimodal hybrid neural network to encode and integrate cues from different sensors, and a multiscale liquid state machine to process and fuse the information. Experimental results show that NeuroGPR performs well in various environmental conditions.
Review
Neurosciences
Andre A. Fenton, Jose R. Hurtado, Jantine A. C. Broek, Eunhye Park, Bud Mishra
Summary: This article explores the possibility of applying game theory to the analysis and modeling of neurobiological systems. By studying the basic properties and features of information asymmetric signaling games, it is possible to explain neurobiological phenomena, particularly cognitive variables in neuronal action potential discharge. The study highlights the need for integrating information and explanations across multiple scales of biological function in order to understand cognitive functions such as learning, memory, and perception. The article specifically focuses on the entorhinal cortex and hippocampus as interconnected brain regions in systems neuroscience, and uses examples of observed neuronal discharge to illustrate the challenges to the concept of information maximization.
Article
Computer Science, Artificial Intelligence
Adithya Krishna, Divyansh Mittal, Siri Garudanagiri Virupaksha, Abhishek Ramdas Nair, Rishikesh Narayanan, Chetan Singh Thakur
Summary: The research has successfully implemented algorithmic and hardware structures mimicking the mammalian spatial navigation system, incorporating grid-cell, place-cell, and decoding modules in a multi-layer architecture to achieve navigation and path integration.
Article
Multidisciplinary Sciences
Marcus K. Benna, Stefano Fusi
Summary: The study proposes a memory model of the hippocampus, suggesting that the hippocampus is a memory device that compresses correlations between sensory experiences into compressed representations of episodes stored in memory. This model naturally produces place cells similar to those observed in experiments, with predictions that the activity of these cells is variable.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Engineering, Multidisciplinary
Hejie Yu, Naigong Yu
Summary: This article proposes a robot navigation model based on the spatial cognitive mechanism of the hippocampus in the rat brain. The model constructs a cognitive map and achieves goal-oriented navigation by utilizing the dynamic predictive relationship between each location cognitive node. The research approach in this article provides inspiration for a robot navigation method with brain-like cognitive mechanisms.
JOURNAL OF ENGINEERING RESEARCH
(2023)
Editorial Material
Neurosciences
Edmund T. T. Rolls
Summary: This passage discusses the role of visual cells in the hippocampus in humans and primates and their importance in memory and navigation. These cells provide allocentric representations of the location of objects and rewards in the environment, which are crucial for human memory and navigation.
Article
Behavioral Sciences
Anna E. Smith, Emma R. Wood, Paul A. Dudchenko
Summary: Head direction cells maintain a similar preferred firing direction across different maze compartments. In a single environment, both a barrier and a cue card exert comparable amounts of stimulus control over head direction cells and place cells.
BRAIN AND BEHAVIOR
(2021)
Editorial Material
Biochemistry & Molecular Biology
Mark H. Plitt, Lisa M. Giocomo
Summary: The recent study using new holographic optogenetic stimulation technology provides direct evidence that hippocampal place cell activity is sufficient to drive memory and navigation-related behaviors.
Article
Neurosciences
Hannah S. Wirtshafter, John F. Disterhoft
Summary: Calcium imaging of rat hippocampus using GCaMP indicators and miniature microscopes provides new insights into the changes of cellular populations over time. The study demonstrates that hundreds of cells can be visualized and tracked in freely moving rats, with calcium events highly correlated with periods of movement. Furthermore, a large percentage of recorded cells were found to be place cells, which enable accurate decoding of animal position and maintain consistent place fields in a spatial map.
JOURNAL OF NEUROSCIENCE
(2022)
Article
Neurosciences
Thibault Cholvin, Vincent Hok, Lisa Giorgi, Franck A. Chaillan, Bruno Poucet
JOURNAL OF NEUROSCIENCE
(2018)
Article
Neurosciences
Sally Barlow, Briana Fahey, Kimberley J. Smith, Johannes Passecker, Andrea Della-Chiesa, Vincent Hok, Jennifer S. Day, Charlotte K. Callaghan, Shane M. O'Mara
BRAIN RESEARCH BULLETIN
(2018)
Article
Anatomy & Morphology
B. Truchet, A. Benoit, F. Chaillan, P. F. Smith, B. Philoxene, M. Guillamin, B. Poucet, A. Coquerel, Stephane Besnard
BRAIN STRUCTURE & FUNCTION
(2019)
Review
Biology
Philippe Gaussier, Jean Paul Banquet, Nicolas Cuperlier, Mathias Quoy, Lise Aubin, Pierre-Yves Jacob, Francesca Sargolini, Etienne Save, Jeffrey L. Krichmar, Bruno Poucet
JOURNAL OF EXPERIMENTAL BIOLOGY
(2019)
Article
Neurosciences
Eleonore Duvelle, Roddy M. Grieves, Vincent Hok, Bruno Poucet, Angelo Arleo, Kate J. Jeffery, Etienne Save
JOURNAL OF NEUROSCIENCE
(2019)
Article
Multidisciplinary Sciences
Pierre-Yves Jacob, Fabrizio Capitano, Bruno Poucet, Etienne Save, Francesca Sargolini
NATURE COMMUNICATIONS
(2019)
Article
Neurosciences
Fanny Sandrine Martineau, Lauriane Fournier, Emmanuelle Buhler, Francoise Watrin, Francesca Sargolini, Jean-Bernard Manent, Bruno Poucet, Alfonso Represa
Article
Behavioral Sciences
Cameron Meyer-Mueller, Pierre-Yves Jacob, Jean-Yves Montenay, Julien Poitreau, Bruno Poucet, Franck A. Chaillan
BEHAVIOURAL BRAIN RESEARCH
(2020)
Review
Neurosciences
Paul F. Smith, Bruno Truchet, Franck A. Chaillan, Yiwen Zheng, Stephane Besnard
FRONTIERS IN MOLECULAR NEUROSCIENCE
(2020)
Review
Neurosciences
Jean-Paul Banquet, Philippe Gaussier, Nicolas Cuperlier, Vincent Hok, Etienne Save, Bruno Poucet, Mathias Quoy, Sidney Wiener
Summary: This passage discusses how experiences of animal and human beings are structured by the continuity of space and time, as well as the unidirectionality of time. It also highlights the central role of the hippocampal system in various temporal processing tasks. Experimental findings in rats and human studies reveal important insights into timing and sequence processing, both during active behavior and rest, shedding light on neural mechanisms and providing neural network models to explain the emergence of scalar properties.
PROGRESS IN NEUROBIOLOGY
(2021)