Results 31 to 40 of about 756,985 (253)
Place Cells, Grid Cells, Attractors, and Remapping [PDF]
Neural 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 ...
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Modeling the Effect of Environmental Geometries on Grid Cell Representations
Frontiers in Neural Circuits, 2019 Grid cells are a special class of spatial cells found in the medial entorhinal cortex (MEC) characterized by their strikingly regular hexagonal firing fields.
Samyukta Jayakumar +5 more
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Ring Attractors as the Basis of a Biomimetic Navigation System
Biomimetics, 2023 The ability to navigate effectively in a rich and complex world is crucial for the survival of all animals. Specialist neural structures have evolved that are implicated in facilitating this ability, one such structure being the ring attractor network ...
Thomas C. Knowles +3 more
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Neural encoding of large-scale three-dimensional space – properties and constraints
Frontiers in Psychology, 2015 How the brain represents represent large-scale, navigable space has been the topic of intensive investigation for several decades, resulting in the discovery that neurons in a complex network of cortical and subcortical brain regions co-operatively ...
Kate J Jeffery +3 more
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Disrupting the Grid Cells’ Need for Speed [PDF]
Neuron, 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
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Automated Measurement of Grid Cell Firing Characteristics
AlgorithmsWe describe GridMet as open-source software that automatically measures the spatial tuning parameters of grid cells, such as firing field size, spacing, and orientation angles.
Nate M. Sutton +3 more
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Grid cells on steeply sloping terrain: evidence for planar rather than volumetric encoding
Frontiers in Psychology, 2015 Neural encoding of navigable space involves a network of structures centred on the hippocampus, whose neurons –place cells – encode current location. Input to the place cells includes afferents from the entorhinal cortex, which contains grid cells. These
Robin Michael Andrew Hayman +3 more
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eLifeAlthough grid cells are one of the most well-studied functional classes of neurons in the mammalian brain, whether there is a single orientation and spacing value per grid module has not been carefully tested. We analyze a recent large-scale recording of
William T Redman +3 more
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Representation of nonspatial and spatial information in the lateral entorhinal cortex
Frontiers in Behavioral Neuroscience, 2011 Some theories of memory propose that the hippocampus integrates the individual items and events of experience within a contextual or spatial framework.
Sachin S Deshmukh +3 more
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Frontiers in Synaptic Neuroscience, 2018 Spatial memory processing requires functional interaction between the hippocampus and the medial entorhinal cortex (MEC). The grid cells of the MEC are most abundant in layer II and rely on a complex network of local inhibitory interneurons to generate ...
Jeremiah P. Hartner +2 more
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