![\"research_neurotheology_2\"](\"http:\/\/www.psycovery.ro\/wp-content\/uploads\/2014\/05\/research_neurotheology_2-150x150.jpg\")
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Te-ai \u00eentrebat vreodat\u0103 de ce \u00eent\u00e2mpini dificult\u0103\u0163i \u00een a-\u0163i aminti diverse lucruri din trecut?<\/p>\n
Contrar intui\u0163iei generale conform c\u0103reia neuroni noi \u00eenseamn\u0103 memorie mai bun\u0103, pentru orice persoan\u0103 care se str\u0103duie\u015fte s\u0103-\u015fi conserve amintirile, regenerarea cerebral\u0103 este ultimul lucru pe care \u015fi l-ar dori.<\/p>\n
Rezultatele unei cercet\u0103ri (Sheena Josselyn \u015fi Paul Frankland)\u00a0 publicate pe 12 mai, anul acesta, <\/i>relev\u0103 faptul c\u0103 neuronii nou forma\u0163i \u00een hipocamp \u2013 o regiune cerebral\u0103 implicat\u0103 \u00een formarea amintirilor, pot destructura informa\u0163ii engramate anterior. Rezultatele ar putea explica de ce este at\u00e2t de dificil\u0103 reactualizarea informa\u0163iilor infantile \u2013 amintirile din copil\u0103rie.<\/p>\n
\u00cen cazul oamenilor \u015fi altor c\u00e2teva mamifere, \u00een regiunea hipocampului (o structur\u0103 subcortical\u0103 \u00een form\u0103 de c\u0103lu\u0163 de mare) se nasc neuroni pe tot parcursul vie\u0163ii, la \u00eenceput mai intens, apoi din ce \u00een ce mai lent, odat\u0103 cu v\u00e2rsta. Cercet\u0103ri anterioare au relevat faptul c\u0103 stimularea prolifer\u0103rii neuronale \u00a0\u00eenainte de un proces de \u00eenv\u0103\u0163are contribuie la sporirea capacit\u0103\u0163ii de engramare. Cercetarea de fa\u0163\u0103, \u00eens\u0103, sugereaz\u0103 faptul c\u0103 neuronii care se formeaz\u0103 dup\u0103 \u00a0ce informa\u0163ia nou\u0103 a fost \u00eenv\u0103\u0163at\u0103, o degradeaz\u0103.<\/p>\n
Con\u0163inutul memoriei are la baz\u0103 \u00eenlan\u0163uiri de neuroni. Este lesne de \u00een\u0163eles c\u0103 atunci c\u00e2nd \u00eentr-o astfel de \u00eenl\u0103n\u0163uire se interpozi\u0163ioneaz\u0103 neuroni noi, reprezentarea \u201cstocat\u0103\u201d \u00een aceasta se distruge dar concomitent, capacitatea de stocare a informa\u0163iei cre\u015fte.<\/p>\n
Despre existen\u0163a neurogenezei se \u015ftie deja de ceva timp. \u00cen urm\u0103 cu mai bine de 10 ani, \u00eens\u0103, Henriette van\u00a0 Praag a descoperit unul dintre cele mai uimitoare lucruri despre acest fenomen. Experien\u0163a poate regla ratadiviziunii celulare, supravie\u0163uirea neuronilor nou forma\u0163i (celule stem nervoase) \u015fi abilitatea acestora de a se integra \u00eentr-un circuit neuronal existent. Soarecii adul\u0163i care au fost muta\u0163i dintr-o cu\u015fc\u0103 simpl\u0103, goal\u0103, \u00eentr-una mai mare, dotat\u0103 cu ro\u0163i de alergat \u015fi alte obiecte, au experimentat o semnificativ\u0103 intensificare a neurogenezei. Este suficient ca \u015foarecii s\u0103 alerge \u00eentr-o roat\u0103 pentru ca num\u0103rul de celule \u00een diviziune din hipocamp s\u0103 se dubleze.<\/p>\n
sursa:<\/i><\/p>\n
Scientific American, 12 mai 2014<\/i><\/p>\n
Scientific American, 1\/2004<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"
Te-ai \u00eentrebat vreodat\u0103 de ce \u00eent\u00e2mpini dificult\u0103\u0163i \u00een a-\u0163i aminti diverse lucruri din trecut? Contrar intui\u0163iei generale conform c\u0103reia neuroni noi \u00eenseamn\u0103 memorie mai bun\u0103, pentru orice persoan\u0103 care se str\u0103duie\u015fte s\u0103-\u015fi conserve amintirile, regenerarea cerebral\u0103 este ultimul lucru pe care \u015fi l-ar dori. Rezultatele unei cercet\u0103ri (Sheena Josselyn \u015fi Paul Frankland)\u00a0 publicate pe 12 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1244","post","type-post","status-publish","format-standard","hentry","category-servicii"],"_links":{"self":[{"href":"https:\/\/www.psycovery.ro\/index.php?rest_route=\/wp\/v2\/posts\/1244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.psycovery.ro\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.psycovery.ro\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.psycovery.ro\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.psycovery.ro\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1244"}],"version-history":[{"count":1,"href":"https:\/\/www.psycovery.ro\/index.php?rest_route=\/wp\/v2\/posts\/1244\/revisions"}],"predecessor-version":[{"id":1246,"href":"https:\/\/www.psycovery.ro\/index.php?rest_route=\/wp\/v2\/posts\/1244\/revisions\/1246"}],"wp:attachment":[{"href":"https:\/\/www.psycovery.ro\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.psycovery.ro\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.psycovery.ro\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}