Results 31 to 40 of about 854,773 (255)

Extracting grid cell characteristics from place cell inputs using non-negative principal component analysis

open access: yeseLife, 2016
Many recent models study the downstream projection from grid cells to place cells, while recent data have pointed out the importance of the feedback projection. We thus asked how grid cells are affected by the nature of the input from the place cells. We
Yedidyah Dordek   +3 more
doaj   +1 more source

Visual landmarks sharpen grid cell metric and confer context specificity to neurons of the medial entorhinal cortex

open access: yeseLife, 2016
Neurons of the medial entorhinal cortex (MEC) provide spatial representations critical for navigation. In this network, the periodic firing fields of grid cells act as a metric element for position.
José Antonio Pérez-Escobar   +4 more
doaj   +1 more source

Framing the grid: effect of boundaries on grid cells and navigation [PDF]

open access: yesThe Journal of Physiology, 2016
AbstractCells in the mammalian hippocampal formation subserve neuronal representations of environmental location and support navigation in familiar environments. Grid cells constitute one of the main cell types in the hippocampal formation and are widely believed to represent a universal metric of space independent of external stimuli.
Julija, Krupic   +3 more
openaire   +2 more sources

Entorhinal Neurons Exhibit Cue Locking in Rodent VR

open access: yesFrontiers in Cellular Neuroscience, 2019
The regular firing pattern exhibited by medial entorhinal (mEC) grid cells of locomoting rodents is hypothesized to provide spatial metric information relevant for navigation.
Giulio Casali   +5 more
doaj   +1 more source

Place Cells, Grid Cells, Attractors, and Remapping [PDF]

open access: yesNeural Plasticity, 2011
Place and grid cells are thought to use a mixture of external sensory information and internal attractor dynamics to organize their activity. Attractor dynamics may explain both why neurons react coherently following sufficiently large changes to the environment (discrete attractors) and how firing patterns move smoothly from one representation to the ...
openaire   +4 more sources

A Framework for Intelligence and Cortical Function Based on Grid Cells in the Neocortex

open access: yesFrontiers in Neural Circuits, 2019
How the neocortex works is a mystery. In this paper we propose a novel framework for understanding its function. Grid cells are neurons in the entorhinal cortex that represent the location of an animal in its environment.
Jeff Hawkins   +4 more
doaj   +1 more source

A Neural Model of Intrinsic and Extrinsic Hippocampal Theta Rhythms: Anatomy, Neurophysiology, and Function

open access: yesFrontiers in Systems Neuroscience, 2021
This article describes a neural model of the anatomy, neurophysiology, and functions of intrinsic and extrinsic theta rhythms in the brains of multiple species.
Stephen Grossberg
doaj   +1 more source

Excitatory Microcircuits within Superficial Layers of the Medial Entorhinal Cortex

open access: yesCell Reports, 2017
The distinctive firing pattern of grid cells in the medial entorhinal cortex (MEC) supports its role in the representation of space. It is widely believed that the hexagonal firing field of grid cells emerges from neural dynamics that depend on the local
Jochen Winterer   +9 more
doaj   +1 more source

A Generalized Linear Model of a Navigation Network

open access: yesFrontiers in Neural Circuits, 2020
Navigation by mammals is believed to rely on a network of neurons in the hippocampal formation, which includes the hippocampus, the medial entorhinal cortex (MEC), and additional nearby regions.
Ehud Vinepinsky   +6 more
doaj   +1 more source

Disrupting the Grid Cells’ Need for Speed [PDF]

open access: yesNeuron, 2016
Hinman et al. demonstrate the presence of two speed signals in the rodent medial entorhinal cortex that are differentially affected by muscimol inactivation of medial septum. The results reveal important constraints on several computational models of grid cell firing.
Hayman, R, Burgess, N
openaire   +3 more sources

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