Journal
HIPPOCAMPUS
Volume 30, Issue 4, Pages 422-432Publisher
WILEY
DOI: 10.1002/hipo.23175
Keywords
grid cells; spatial navigation; heuristics; human behavior; entorhinal cortex
Categories
Funding
- Division of Behavioral and Cognitive Sciences [BCS-1630296]
- National Institute of Neurological Disorders and Stroke [R01NS076856]
- National Institutes of Health [F32MH116577]
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Grid cells provide a compelling example of a link between cellular activity and an abstract and difficult to define concept like space. Accordingly, a representational perspective on grid coding argues that neural grid coding underlies a fundamentally spatial metric. Recently, some theoretical proposals have suggested extending such a framework to non-spatial cognition as well, such as category learning. Here, we provide a critique of the frequently employed assumption of an isomorphism between patterns of neural activity (e.g., grid cells), mental representation, and behavior (e.g., navigation). Specifically, we question the strict isomorphism between these three levels and suggest that human spatial navigation is perhaps best characterized by a wide variety of both metric and nonmetric strategies. We offer an alternative perspective on how grid coding might relate to human spatial navigation, arguing that grid coding is part of a much larger conglomeration of neural activity patterns that dynamically tune to accomplish specific behavioral outputs.
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