{"id":2947,"date":"2024-02-20T10:58:58","date_gmt":"2024-02-20T00:58:58","guid":{"rendered":"https:\/\/www.cognav.net\/?p=2947"},"modified":"2024-02-20T10:58:58","modified_gmt":"2024-02-20T00:58:58","slug":"how-the-medial-entorhinal-cortex-develops-during-learning-and-influences-memory","status":"publish","type":"post","link":"https:\/\/braininspirednavigation.com\/?p=2947","title":{"rendered":"How the medial entorhinal cortex develops during learning and influences memory?"},"content":{"rendered":"<p class=\"c-bibliographic-information__citation\" style=\"text-align: justify;\">Malone, T.J., Tien, NW., Ma, Y.\u00a0<i>et al.<\/i>\u00a0<a href=\"https:\/\/www.nature.com\/articles\/s41467-024-45853-4\"><strong>A consistent map in the medial entorhinal cortex supports spatial memory<\/strong><\/a>.\u00a0<i>Nat Commun<\/i>\u00a0<b>15<\/b>, 1457 (2024). https:\/\/doi.org\/10.1038\/s41467-024-45853-4<\/p>\n<p style=\"text-align: justify;\">Abstract<br \/>\n&#8220;<strong><span style=\"color: #ff0000;\">The medial entorhinal cortex (MEC) is hypothesized to function as a cognitive map for memory-guided navigation<\/span><\/strong>. <strong><span style=\"color: #ff0000;\">How this map develops during learning and influences memory remains unclear<\/span><\/strong>. By imaging MEC calcium dynamics while mice successfully learned a novel virtual environment over ten days, we discovered that the dynamics gradually became more spatially consistent and then stabilized. Additionally, grid cells in the MEC not only exhibited improved spatial tuning consistency, but also maintained stable phase relationships, <strong><span style=\"color: #ff0000;\">suggesting a network mechanism involving synaptic plasticity and rigid recurrent connectivity to shape grid cell activity during learning<\/span><\/strong>. Increased c-Fos expression in the MEC in novel environments further supports the induction of synaptic plasticity. Unsuccessful learning lacked these activity features, indicating that a consistent map is specific for effective spatial memory. Finally, optogenetically disrupting spatial consistency of the map impaired memory-guided navigation in a well-learned environment. Thus, <strong><span style=\"color: #ff0000;\">we demonstrate that the establishment of a spatially consistent MEC map across learning both correlates with, and is necessary for, successful spatial memory<\/span><\/strong>.&#8221;<\/p>\n<p style=\"text-align: justify;\">Malone, T.J., Tien, NW., Ma, Y.\u00a0<i>et al.<\/i>\u00a0<a href=\"https:\/\/www.nature.com\/articles\/s41467-024-45853-4\"><strong>A consistent map in the medial entorhinal cortex supports spatial memory<\/strong><\/a>.\u00a0<i>Nat Commun<\/i>\u00a0<b>15<\/b>, 1457 (2024). https:\/\/doi.org\/10.1038\/s41467-024-45853-4<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Malone, T.J., Tien, NW., Ma, Y.\u00a0et al.\u00a0A consistent map in the medial entorhinal cortex supports spatial memory.\u00a0Nat Commun\u00a015, 1457 (2024). https:\/\/doi.org\/10.1038\/s41467-024-45853-4 Abstract &#8220;The medial entorhinal cortex (MEC) is hypothesized to function as a cognitive map for memory-guided navigation. How this map develops during learning and influences memory remains unclear. By imaging MEC calcium dynamics while [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[987,96,346,519],"tags":[1299,1012,358],"_links":{"self":[{"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=\/wp\/v2\/posts\/2947"}],"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=2947"}],"version-history":[{"count":1,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=\/wp\/v2\/posts\/2947\/revisions"}],"predecessor-version":[{"id":2948,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=\/wp\/v2\/posts\/2947\/revisions\/2948"}],"wp:attachment":[{"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2947"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2947"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/braininspirednavigation.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}