Rat hippocampal principal cells called “place cells” have spatially localized firing which provides information about the animal’s current position in an environment
نویسندگان
چکیده
Institute of Physiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20 Prague 4, Czech Republic, Department of Mathematics, Rostov State University, R. Zorge 5, 344090 Rostov-on-Don, Russian Federation Department of Physiology and Pharmacology, State University of New York, Downstate Medical Center, 450 Clarkson Ave., Brooklyn, NY 11203, USA {aolypher, lansky, fenton}@biomed.cas.cz
منابع مشابه
مدل شبکه ی عصبی از نگاشت سلولهای شبکه به سلولهای مکانی
Abstract: Medial entorhinal cortex is known to be the hub of a brain system for navigation and spatial representation. These cells increase firing frequency at multiple regions in the environment, arranged in regular triangular grids. Each cell has some properties including spacing, orientation, and phase shift of the nodes of its grid. Entorhinal cortex is commonly perceived to be the major in...
متن کاملRepresentation of Geometric Borders in the Developing Rat
Local space is represented by a number of functionally specific cell types, including place cells in the hippocampus and grid cells, head direction cells, and border cells in the medial entorhinal cortex (MEC). These cells form a functional map of external space already at the time when rat pups leave the nest for the first time in their life, at the age of 2.5 weeks. However, while place cells...
متن کاملModelling Path Integrator Recalibration Using Hippocampal Place Cells
The firing activities of place cells in the rat hippocampus exhibit strong correlations to the animal’s location. External (e.g. visual) as well as internal (proprioceptive and vestibular) sensory information take part in controlling hippocampal place fields. Previously it has been observed that when rats shuttle between a movable origin and a fixed target the hippocampus encodes position in tw...
متن کاملThe firing of hippocampal place cells predicts the future position of freely moving rats.
Direct observation and automatic, video-based methods reveal that a large fraction of hippocampal pyramidal neurons recorded from freely moving rats behave as "place cells"; the firing of each place cell occurs almost exclusively when the rat is in a restricted part of its current environment. In earlier work, 2-dimensional firing distributions for place cells over the apparatus area were made ...
متن کاملInteractions between location and task affect the spatial and directional firing of hippocampal neurons.
When rats forage for randomly dispersed food in a high walled cylinder the firing of their hippocampal "place" cells exhibits little dependence on the direction faced by the rat. On radial arm mazes and similar tasks, place cells are strongly directionally selective within their fields. These tasks differ in several respects, including the visual environment, configuration of the traversable sp...
متن کامل