Spatial Navigation: Head Direction Cells Are Anchored by Gravity
نویسنده
چکیده
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.
منابع مشابه
Simulation of a Thalamocortical Circuit for Computing Directional Heading in the Rat
Several regions of the rat brain contain neurons known as head-direction celis, which encode the animal's directional heading during spatial navigation. This paper presents a biophysical model of head-direction cell acti vity, which suggests that a thalamocortical circuit might compute the rat's head direction by integrating the angular velocity of the head over time. The model was implemented ...
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Spatial cognition is an important model system with which to investigate how sensory signals are transformed into cognitive representations. Head direction cells, found in several cortical and subcortical regions, fire when an animal faces a given direction and express a global directional signal which is anchored by visual landmarks and underlies the “sense of direction”. We investigated the i...
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ورودعنوان ژورنال:
- Current Biology
دوره 23 شماره
صفحات -
تاریخ انتشار 2013