Home, head direction stability, and grid cell distortion
نویسندگان
چکیده
منابع مشابه
Parallel and convergent processing in grid cell, head-direction cell, boundary cell, and place cell networks
The brain is able to construct internal representations that correspond to external spatial coordinates. Such brain maps of the external spatial topography may support a number of cognitive functions, including navigation and memory. The neuronal building block of brain maps are place cells, which are found throughout the hippocampus of rodents and, in a lower proportion, primates. Place cells ...
متن کاملHead direction maps remain stable despite grid map fragmentation
Areas encoding space in the brain contain both representations of position (place cells and grid cells) and representations of azimuth (head direction cells). Previous studies have already suggested that although grid cells and head direction cells reside in the same brain areas, the calculation of head direction is not dependent on the calculation of position. Here we demonstrate that realignm...
متن کاملBoth visual and idiothetic cues contribute to head direction cell stability during navigation along complex routes.
Successful navigation requires a constantly updated neural representation of directional heading, which is conveyed by head direction (HD) cells. The HD signal is predominantly controlled by visual landmarks, but when familiar landmarks are unavailable, self-motion cues are able to control the HD signal via path integration. Previous studies of the relationship between HD cell activity and path...
متن کاملSelf-motion improves head direction cell tuning.
Head direction (HD) cells respond when an animal faces a particular direction in the environment and form the basis for the animal's perceived directional heading. When an animal moves through its environment, accurate updating of the HD signal is required to reflect the current heading, but the cells still maintain a representation of HD even when the animal is motionless. This finding suggest...
متن کاملThe nucleus prepositus hypoglossi contributes to head direction cell stability in rats.
Head direction (HD) cells in the rat limbic system fire according to the animal's orientation independently of the animal's environmental location or behavior. These HD cells receive strong inputs from the vestibular system, among other areas, as evidenced by disruption of their directional firing after lesions or inactivation of vestibular inputs. Two brainstem nuclei, the supragenual nucleus ...
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ژورنال
عنوان ژورنال: Journal of Neurophysiology
سال: 2020
ISSN: 0022-3077,1522-1598
DOI: 10.1152/jn.00518.2019