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Unpacking the cognitive map: the parallel map theory of hippocampal function
Journal Article Research Support, Non-U.S. Gov't Review --- Old month value: Apr
In the parallel map theory, the hippocampus encodes space with 2 mapping systems. The bearing map is constructed primarily in the dentate gyrus from directional cues such as stimulus gradients. The sketch map is constructed within the hippocampus proper from positional cues. The integrated map emerges when data from the bearing and sketch maps are combined. Because the component maps work in parallel, the impairment of one can reveal residual learning by the other. Such parallel function may explain paradoxes of spatial learning, such as learning after partial hippocampal lesions, taxonomic and sex differences in spatial learning, and the function of hippocampal neurogenesis. By integrating evidence from physiology to phylogeny, the parallel map theory offers a unified explanation for hippocampal function.
Animals *Cognition Dentate Gyrus/physiology Hippocampus/*physiology Humans *Psychological Theory Rats Space Perception/physiology Spatial Behavior/physiology
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