{"id":2369,"date":"2020-12-10T15:22:41","date_gmt":"2020-12-10T05:22:41","guid":{"rendered":"https:\/\/www.cognav.net\/?p=2369"},"modified":"2020-12-10T15:22:50","modified_gmt":"2020-12-10T05:22:50","slug":"how-do-entorhinal-grid-cells-represent-volumetric-three-dimensional-space","status":"publish","type":"post","link":"https:\/\/braininspirednavigation.com\/?p=2369","title":{"rendered":"How do entorhinal grid cells represent volumetric (three-dimensional) space?"},"content":{"rendered":"<p style=\"text-align: justify;\">Roddy M. Grieves, Selim Jedidi-Ayoub, Karyna Mishchanchuk, Anyi Liu, Sophie Renaudineau, \u00c9l\u00e9onore Duvelle, Kate J. Jeffery. <a href=\"https:\/\/www.biorxiv.org\/content\/10.1101\/2020.12.06.413542v1\"><strong>Grid cell firing fields in a volumetric space<\/strong><\/a>.\u00a0bioRxiv 2020.12.06.413542; doi: https:\/\/doi.org\/10.1101\/2020.12.06.413542<\/p>\n<p style=\"text-align: justify;\">Abstract<br \/>\n &#8220;We investigated <strong><span style=\"color: #ff0000;\">how entorhinal grid cells represent volumetric (three-dimensional) space<\/span><\/strong>. On a flat surface, grid cell firing fields are circular and arranged in a close-packed hexagonal array. In three dimensions, theoretical and computational work suggests that the most efficient configuration would be a regular close packing of spherical fields. <strong><span style=\"color: #ff0000;\">We report that in rats exploring a cubic lattice, grid cells were spatially stable and maintained normal directional modulation, theta modulation and spike dynamics<\/span><\/strong>. However, while <strong><span style=\"color: #ff0000;\">the majority of grid fields were spherical, they were irregularly arranged<\/span><\/strong>, even when only fields abutting the lower surface (equivalent to the floor) were considered. Thus, <strong><span style=\"color: #ff0000;\">grid organization is shaped by the environment\u2019s movement affordances, and may not need to be regular to support spatial computations<\/span><\/strong>.&#8221;<\/p>\n<p style=\"text-align: justify;\">Roddy M. Grieves, Selim Jedidi-Ayoub, Karyna Mishchanchuk, Anyi Liu, Sophie Renaudineau, \u00c9l\u00e9onore Duvelle, Kate J. Jeffery. <a href=\"https:\/\/www.biorxiv.org\/content\/10.1101\/2020.12.06.413542v1\"><strong>Grid cell firing fields in a volumetric space<\/strong><\/a>.\u00a0bioRxiv 2020.12.06.413542; doi: https:\/\/doi.org\/10.1101\/2020.12.06.413542<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Roddy M. Grieves, Selim Jedidi-Ayoub, Karyna Mishchanchuk, Anyi Liu, Sophie Renaudineau, \u00c9l\u00e9onore Duvelle, Kate J. Jeffery. Grid cell firing fields in a volumetric space.\u00a0bioRxiv 2020.12.06.413542; doi: https:\/\/doi.org\/10.1101\/2020.12.06.413542 Abstract &#8220;We investigated how entorhinal grid cells represent volumetric (three-dimensional) space. On a flat surface, grid cell firing fields are circular and arranged in a close-packed hexagonal array. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[390,346],"tags":[347,120,348,531,607,860],"_links":{"self":[{"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=\/wp\/v2\/posts\/2369"}],"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=2369"}],"version-history":[{"count":2,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=\/wp\/v2\/posts\/2369\/revisions"}],"predecessor-version":[{"id":2371,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=\/wp\/v2\/posts\/2369\/revisions\/2371"}],"wp:attachment":[{"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2369"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2369"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2369"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}