Sequences and the location signal for columns

Science Numenta Theory
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I was reading a paper by Dileep George (who used to work at Numenta) on how sequences in the Hippocampus can create a spatial map. Grid cells aren’t needed for this. Numenta’s theory has sequences also created in the neocortex. In addition, Numenta says that a ‘object-centered location signal’ must exist in the neocortex so that objects and hierarchies of object parts can be detected.
Assuming that grid cells in the neocortex have not been found, is it possible that some sequences in the neocortex are dedicated to finding location, and other sequences use that location to put together an object?

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Please provide a link to the paper.

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Here’s the link: https://www.biorxiv.org/content/10.1101/864421v4

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Thank you!

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