Grieves, R.M., Jedidi-Ayoub, S., Mishchanchuk, K. et al. Irregular distribution of grid cell firing fields in rats exploring a 3D volumetric space. Nat Neurosci (2021). https:\/\/doi.org\/10.1038\/s41593-021-00907-4<\/p>\n
Abstract Grieves, R.M., Jedidi-Ayoub, S., Mishchanchuk, K. et al. Irregular distribution of grid cell firing fields in rats exploring a 3D volumetric space. Nat Neurosci (2021). https:\/\/doi.org\/10.1038\/s41593-021-00907-4<\/p>\n","protected":false},"excerpt":{"rendered":" Grieves, R.M., Jedidi-Ayoub, S., Mishchanchuk, K. et al. Irregular distribution of grid cell firing fields in rats exploring a 3D volumetric space. Nat Neurosci (2021). https:\/\/doi.org\/10.1038\/s41593-021-00907-4 Abstract “We investigated how entorhinal grid cells encode volumetric space. On a horizontal surface, grid cells usually produce multiple, spatially focal, approximately circular firing fields that are evenly sized […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[390,389,96],"tags":[347],"_links":{"self":[{"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=\/wp\/v2\/posts\/2455"}],"collection":[{"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2455"}],"version-history":[{"count":1,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=\/wp\/v2\/posts\/2455\/revisions"}],"predecessor-version":[{"id":2456,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=\/wp\/v2\/posts\/2455\/revisions\/2456"}],"wp:attachment":[{"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2455"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2455"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2455"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n“We investigated how entorhinal grid cells encode volumetric space<\/span><\/strong>. On a horizontal surface, grid cells usually produce multiple, spatially focal, approximately circular firing fields that are evenly sized and spaced to form a regular, close-packed, hexagonal array. This spatial regularity has been suggested to underlie navigational computations. In three dimensions, theoretically the equivalent firing pattern would be a regular, hexagonal close packing of evenly sized spherical fields<\/span><\/strong>. In the present study, we report that, in rats foraging in a cubic lattice, grid cells maintained normal temporal firing characteristics and produced spatially stable firing fields<\/span><\/strong>. However, although most grid fields were ellipsoid, they were sparser, larger, more variably sized and irregularly arranged, even when only fields abutting the lower surface (equivalent to the floor) were considered<\/span><\/strong>. Thus, grid self-organization is shaped by the environment\u2019s structure and\/or movement affordances, and grids may not need to be regular to support spatial computations.”<\/p>\n