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Yes, grid cells in the hippocampus [0] form a coordinate system that is used for 4D spatiotemporal navigation [1], as well as navigation in abstract high-dimensional "concept space" [2]

[0] http://www.scholarpedia.org/article/Grid_cells

[1] Time (and space) in the hippocampus https://pubmed.ncbi.nlm.nih.gov/28840180/

[2] Organizing conceptual knowledge in humans with a gridlike code: https://science.sciencemag.org/content/352/6292/1464



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