Numenta Research Meeting - Dec 9, 2019

[Bitking]

this is a related discussion regarding the 2-D vs 3-D nature of grid cell representation here:

Do head direction cells represent 2D or 3D direction?

2D. Grid cells on steeply sloping terrain - evidence for planar rather than volumetric encoding Neural encoding of large-scale three-dimensional space—properties and constraints Neuroscience: How Is Three-Dimensional Space Encoded in the Brain?

I am not really surprised that an inherently 2D sheet preferentially maps 2D space.