We have Place cells. Around 2014 (I thing they said) it was discovered we have Grid cells. They start as triangles and move out to hexagons. We have Head Direction cells. Facing north, south, etc. And Distance cells for walls, etc. Human cognitive maps are of 2 kinds - visual maps or egocentric. Egocentric maps count body turns, distance.
Ideas radio documentary - http://www.cbc.ca/radio/ideas/you-are-here-1.2965462
They asked, Using GPS will we have brain atrophy?