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Low-Dimensional Maps Encoding Dynamics in Entorhinal Cortex and Hippocampus
2006
Neural Computation
The results obtained in the dynamic clamp experiments are in a good agreement with the analytical framework. ...
In this article, we use models and dynamic clamp experiments to investigate the synchronization properties Neural Computation 18, 2617-2650 (2006) C 2006 Massachusetts Institute of Technology hibitory ...
Acknowledgments We acknowledge Jozsi Jalics and Corey Acker for insightful discussions. ...
doi:10.1162/neco.2006.18.11.2617
pmid:16999573
fatcat:x3wg36dvtjcgfhf5maujaxvbrq
Bayesian Integration of Multi-resolutional Grid Codes for Spatial Cognition
[article]
2019
arXiv
pre-print
dynamics work in the entorhinal-hippocampal circuit. ...
To understand the information transform across between neocortex, entorhinal cortex, and hippocampus, we propose spatial memory indexing theory from hippocampal indexing theory to investigate how neural ...
neocortex (visual cortex and vestibular cortex), entorhinal cortex (medial entorhinal cortex and lateral entorhinal cortex), and hippocampus (CA3 and CA1). ...
arXiv:1910.05881v1
fatcat:vz235oqkujcqfkqad7sx4ve6dy
Place cells, spatial maps and the population code for memory
2005
Current Opinion in Neurobiology
The code is based on inputs from a topographically organized, path-integrationdependent spatial map that lies upstream in the medial entorhinal cortex. ...
The study of population dynamics in hippocampal place cells has emerged as one of the most powerful tools for understanding the encoding, storage and retrieval of declarative memory. ...
Frank LM, Brown EN, Wilson M: Trajectory encoding in the hippocampus and entorhinal cortex. Neuron 2000, 27:169-178. 21. ...
doi:10.1016/j.conb.2005.10.002
pmid:16263261
fatcat:cuxrsxddnzbbxcns7ssrqjhst4
Navigating cognition: Spatial codes for human thinking
2018
Science
In our framework, place and grid cell population codes provide a representational format to map variable dimensions of cognitive spaces. ...
Action sequences result in trajectories through cognitive space, which can be simulated via sequential coding in the hippocampus. ...
(B) Firing of a place cell (left) and a grid cell (right) recorded from the hippocampus and entorhinal cortex, respectively. ...
doi:10.1126/science.aat6766
pmid:30409861
fatcat:uwu3jgxuxbhh5pkxoigt4kvrpe
Knowledge Across Reference Frames: Cognitive Maps and Image Spaces
2020
Trends in Cognitive Sciences
In human and non-human animals, conceptual knowledge is partially organized according to low-dimensional geometries that rely on brain structures and computations involved in spatial representations. ...
We also suggest that cognitive maps and image spaces may be two manifestations of a more general propensity of the mind to create low-dimensional internal models. ...
Acknowledgments We thank Jacob Bellmund, Talia Brandman, Kyle Jasmin, Léo Dutriaux, and Yangwen Xu for comments on an earlier draft. ...
doi:10.1016/j.tics.2020.05.008
pmid:32586649
fatcat:b6dl7uhpubhb3axtqoy56f6asy
MRI hippocampal and entorhinal cortex mapping in predicting conversion to Alzheimer's disease
2012
NeuroImage
Objective-Using MRI surface morphometry mapping, to evaluate local deformations of the hippocampus, parahippocampal gyrus, and entorhinal cortex in predicting conversion from mild cognitive impairment ...
Methods-Baseline brain MRI with surface morphological analysis was performed in 130 outpatients with MCI, broadly defined, and 61 healthy controls followed for an average of 4 years in a single site study ...
Acknowledgments Supported in part by grants AG17761 and P30 AG08051 from the National Institute of Aging. ...
doi:10.1016/j.neuroimage.2012.01.075
pmid:22289801
pmcid:PMC3320768
fatcat:kamwgivw5nbhbafaj7rxa5kghe
Four-Dimensional Consciousness
2017
Activitas Nervosa Superior
Conscious experience is an orientation in space and time, an understanding of the position of the observer in space and time. ...
A neural correlate for four-dimensional conscious experience can be found in the human brain and is modelled by Einstein's special theory of relativity. ...
Utilizing a reference grid set up by entorhinal cortex grid cells, the hippocampus differentially encodes key events in space and time and represents spacetime interval inequalities. ...
doi:10.1007/s41470-017-0008-x
fatcat:ok7qkk63sjftbhqmbrrvy5yox4
Memory, navigation and theta rhythm in the hippocampal-entorhinal system
2013
Nature Neuroscience
We review experimental data in support of this hypothesis and discuss how specific firing patterns and oscillatory dynamics in the entorhinal cortex and hippocampus can support both navigation and memory ...
Theories on the functions of the hippocampal system are based largely on two fundamental discoveries: the amnestic consequences of removing the hippocampus and associated structures in the famous patient ...
among modules of the entorhinal cortex grid map. ...
doi:10.1038/nn.3304
pmid:23354386
pmcid:PMC4079500
fatcat:flxypijmt5bmhkm26aiyqtwjsi
A single microcircuit with multiple functions: state dependent information processing in the hippocampus
2012
Current Opinion in Neurobiology
Many neural circuits process information in multiple distinct modes. For example, the hippocampus is involved in memory encoding, retrieval, and consolidation processes. ...
These different mnemonic computations require processing of differing balances of current sensory input and previously stored associations. ...
Microstructure of a spatial map in the
entorhinal cortex. Nature. 2005; 436:801-806. [PubMed: 15965463]
21. Sargolini F, Fyhn M, Hafting T, McNaughton BL, Witter MP, Moser MB, Moser EI. ...
doi:10.1016/j.conb.2012.03.007
pmid:22480878
pmcid:PMC3438355
fatcat:xf257oheobb7tdgok6w2vlnelm
A processing architecture for associative short-term memory in electronic noses
2006
Measurement science and technology
Starting from the base models available in the architecture core, dedicated models for neurons, maps and connections were tailored to an artificial olfactory system devoted to analysing olive oil. ...
To overcome these problems this paper presents an architecture for dynamic and efficient management of multi-transducer data processing techniques and for saving an associative short-term memory of the ...
The input entorhinal cortex and the output entorhinal cortex maps represent the input and the output of the net, respectively. ...
doi:10.1088/0957-0233/17/11/027
fatcat:qri3gntvyjcjxix7snadrpgmey
A Controlled Attractor Network Model of Path Integration in the Rat
2005
Journal of Computational Neuroscience
Cells in several areas of the hippocampal formation show place specific firing patterns, and are thought to form a distributed representation of an animal's current location in an environment. ...
Experimental results suggest that this representation is continually updated even in complete darkness, indicating the presence of a path integration mechanism in the rat. ...
This work is supported by the National Science and Engineering Research Council of Canada (261453-03), the Canadian Foundation for Innovation (3358401), and the Ontario Innovation Trust (3358501). ...
doi:10.1007/s10827-005-6558-z
pmid:15714269
fatcat:7lpa7s4ujfcfdfconjmu6usmqa
A theory of joint attractor dynamics in the hippocampus and the entorhinal cortex accounts for artificial remapping and grid cell field-to-field variability
2020
eLife
Here we develop a theory of joint attractor dynamics in the hippocampus and the MEC. ...
Grid cell modules in the medial entorhinal cortex (MEC) express activity patterns that span a low-dimensional manifold which remains stable across different environments. ...
Impaired Spatial Representation in CA1 after Lesion of Direct Input from Entorhinal Burak, Y. (2014). Spatial coding and attractor dynamics of grid cells in the entorhinal cortex. 820 Curr. Opin. ...
doi:10.7554/elife.56894
fatcat:jwsqcykz6nda3chkojrsnkyibe
Pattern separation, pattern completion, and new neuronal codes within a continuous CA3 map
2007
Learning & memory (Cold Spring Harbor, N.Y.)
entorhinal cortex. ...
The hippocampal CA3 subregion is critical for rapidly encoding new memories, which suggests that neuronal computations are implemented in its circuitry that cannot be performed elsewhere in the hippocampus ...
McNaughton, and M. Witter for their helpful comments. The work was supported by a Centre of Excellence and a NevroNor grant from the Norwegian Research Council. ...
doi:10.1101/lm.703907
pmid:18007018
fatcat:vrc75lph25bcddcbbnt37b7ese
Parametric Anatomical Modeling: A method for modeling the anatomical layout of neurons and their projections
2014
Frontiers in Neuroinformatics
The low-dimensional, but yet biologically plausible, parameter space renders PAM suitable to analyse allometric and evolutionary factors in networks and to model the complexity of real networks with comparatively ...
function of the hippocampus. ...
This low-dimensional encoding has two practical advantages. ...
doi:10.3389/conf.fninf.2014.18.00020
fatcat:d3sobrur3vaknf3ar6qgovclja
A Role for the Longitudinal Axis of the Hippocampus in Multiscale Representations of Large and Complex Spatial Environments and Mnemonic Hierarchies
[chapter]
2018
The Hippocampus - Plasticity and Functions
The hippocampus is involved in spatial navigation and memory in rodents and humans. ...
during navigation in large and complex environments or when encoding complex memories. ...
Acknowledgements We wish to thank Blaine Harper and Sahana Srivathsa for comments which improved the manuscript. ...
doi:10.5772/intechopen.71165
fatcat:iv2o7wtz5jhjrov7cdtszvfwpq
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