Spatial Mapping: Graded Precision of Entorhinal Head Direction Cells
نویسندگان
چکیده
منابع مشابه
Spatial Mapping: Graded Precision of Entorhinal Head Direction Cells
Representation of head direction in medial entorhinal cortex shows a gradient of precision, from high directional precision dorsally to low ventrally; this parallels the gradient of spatial scale in place and grid cells, and suggests that the brain constructs spatial maps of varying resolution, perhaps to serve different requirements.
متن کاملTopography of Head Direction Cells in Medial Entorhinal Cortex
BACKGROUND Neural circuits in the medial entorhinal cortex (MEC) support translation of the external environment to an internal map of space, with grid and head direction neurons providing metrics for distance and orientation. RESULTS We show here that head direction cells in MEC are organized topographically. Head direction tuning varies widely across the entire dorsoventral MEC axis, but in...
متن کاملRapid spatial reorientation and head direction cells.
It is surprising how quickly we can find our bearings when suddenly confronted with a familiar environment, for instance when the lights are turned on in a dark room. Subjectively, this appears to occur almost instantaneously, yet the neural processes permitting this rapid reorientation are unknown. A likely candidate is the head direction (HD) cell system. These limbic neurons found in several...
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Thalamic neurons that signal an animal's direction of heading are crucial for spatial navigation. Both directional coding and flexible use of spatial memory are upended, however, when a rat has to find its way while upside down.
متن کاملSpatial orientation in navigating agents: Modeling head-direction cells
A model that is consistent with several neurophysiological properties of biological headdirection cells is presented. The dynamics of the system is primarily controlled by idiothetic signals which determine the direction selectivity property. By means of LTP correlation learning, allothetic cues are incorporated to stabilize the direction representation over time. The interaction between alloth...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2014
ISSN: 0960-9822
DOI: 10.1016/j.cub.2013.12.036