Results 41 to 50 of about 1,231,821 (322)
Global Opportunities to Increase Agricultural Independence Through Phosphorus Recycling [PDF]
, 2019 Food production hinges largely upon access to phosphorus (P) fertilizer. Most fertilizer P used in the global agricultural system comes from mining of nonrenewable phosphate rock deposits located within few countries.
Beusen, A. H.W. +9 more
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Framing the grid: effect of boundaries on grid cells and navigation [PDF]
The 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
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Building a Nest by an Automaton [PDF]
, 2019 A robot modeled as a deterministic finite automaton has to build a structure from material available to it. The robot navigates in the infinite oriented grid Z x Z. Some cells of the grid are full (contain a brick) and others are empty.
Czyzowicz, Jurek +2 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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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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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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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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Does Optic Flow Explain the Firing of Grid Cells? [PDF]
, 2011 *Problem.* Various cues such as vestibular, sensorimotor, or visual information can lead to the firing of grid cells recorded in entorhinal cortex of rats.
Ennio Mingolla +2 more
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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 ...
openaire +4 more sources