{"id":82764,"date":"2024-08-18T07:36:06","date_gmt":"2024-08-18T07:36:06","guid":{"rendered":"https:\/\/kamucalisani.net\/?p=82764"},"modified":"2024-08-18T07:36:06","modified_gmt":"2024-08-18T07:36:06","slug":"beynin-her-bir-ani-icin-uc-kopya-yarattigi-tespit-edildi","status":"publish","type":"post","link":"https:\/\/kamucalisani.net\/index.php\/2024\/08\/18\/beynin-her-bir-ani-icin-uc-kopya-yarattigi-tespit-edildi\/","title":{"rendered":"Beynin, her bir an\u0131 i\u00e7in \u00fc\u00e7 kopya yaratt\u0131\u011f\u0131 tespit edildi"},"content":{"rendered":"

<\/span> T\u0131pk\u0131 yedekli bilgisayar sistemleri gibi, insan beyninin tek bir an\u0131y\u0131 depolamak i\u00e7in \u00fc\u00e7 farkl\u0131 n\u00f6ron seti<\/strong> kulland\u0131\u011f\u0131 ortaya kondu.\u00a0Basel \u00dcniversitesi’nin Biozentrum’undaki ara\u015ft\u0131rmac\u0131lar, farelerin beyinlerini g\u00f6r\u00fcnt\u00fcleyerek<\/strong> yeni bir an\u0131 olu\u015ftu\u011funda nelerin ger\u00e7ekle\u015fti\u011fini izlediler. <\/figure>\n

Haf\u0131za i\u00e7in \u00fc\u00e7 farkl\u0131 n\u00f6ron seti harekete ge\u00e7iyor<\/b><\/p>\n

Ara\u015ft\u0131rmacl\u0131lar, kemirgen beyinlerinin an\u0131y\u0131 kaydetmek i\u00e7in \u00fc\u00e7 farkl\u0131 n\u00f6ron setini harekete ge\u00e7irdi\u011fini tespit etti. \u0130lki erken do\u011fan n\u00f6ronlar<\/strong> olarak bilinir ve bir fet\u00fcs b\u00fcy\u00fcrken en erken geli\u015fen n\u00f6ronlard\u0131r. Spektrumun di\u011fer ucunda embriyonik geli\u015fimin ge\u00e7 d\u00f6nemlerinde ortaya \u00e7\u0131kan ge\u00e7 do\u011fan n\u00f6ronlar<\/strong> bulunur. Bunlar\u0131n aras\u0131nda rahimdeki b\u00fcy\u00fcmenin ortas\u0131nda olu\u015fan n\u00f6ronlar bulunur.<\/p>\n

G\u00f6r\u00fcnt\u00fcleme \u00e7al\u0131\u015fmas\u0131, yeni an\u0131lar\u0131n erken do\u011fan n\u00f6ronlarda depoland\u0131\u011f\u0131 durumlarda, ba\u015flang\u0131\u00e7ta hat\u0131rlanmas\u0131n\u0131n zor oldu\u011funu, ancak zaman ge\u00e7tik\u00e7e g\u00fc\u00e7lendi\u011fini<\/strong> ortaya koydu.<\/p>\n

\u00d6te yandan, ge\u00e7 do\u011fan n\u00f6ronlarda depolanan haf\u0131zan\u0131n kopyas\u0131 ba\u015flang\u0131\u00e7ta \u00e7ok g\u00fc\u00e7l\u00fc oldu\u011fu, ancak zamanla beyin taraf\u0131ndan eri\u015filemez hale gelene kadar zay\u0131flad\u0131\u011f\u0131 <\/strong>tespit edildi. Orta evrede ise bellek kopyas\u0131, di\u011fer n\u00f6ronal gruplar\u0131n herhangi birine k\u0131yasla daha y\u00fcksek bir stabilite<\/strong> g\u00f6sterdi.<\/p>\n

<\/span> Bir farenin hipokamp\u00fcs\u00fcn\u00fcn bu kesiti, bir haf\u0131zan\u0131n uzun s\u00fcreli bir kopyas\u0131n\u0131 olu\u015fturmaktan sorumlu olan erken do\u011fan n\u00f6ronlar\u0131 macenta renginde<\/strong> g\u00f6steriyor. <\/figure>\n

Biozentrum’daki ara\u015ft\u0131rma grubunun ba\u015fkan\u0131 Flavio Donato, beyinde haf\u0131za olu\u015fumuyla ilgili \u015funlar\u0131 s\u00f6yl\u00fcyor: \u201cBeynin haf\u0131zayla ilgili kar\u015f\u0131la\u015ft\u0131\u011f\u0131 zorluk olduk\u00e7a etkileyici. Bir yandan, i\u00e7inde ya\u015fad\u0131\u011f\u0131m\u0131z d\u00fcnyay\u0131 anlamam\u0131za yard\u0131mc\u0131 olmak i\u00e7in ge\u00e7mi\u015fte ne oldu\u011funu hat\u0131rlamal\u0131. Di\u011fer yandan, etraf\u0131m\u0131zda meydana gelen de\u011fi\u015fikliklere uyum sa\u011flamal\u0131 ve bu y\u00fczden an\u0131lar\u0131m\u0131z da gelece\u011fimiz i\u00e7in uygun se\u00e7imler yapmam\u0131za yard\u0131mc\u0131 olacak \u015fekilde de\u011fi\u015fmeli.”<\/p>\n

“Haf\u0131zay\u0131 de\u011fi\u015ftirmek m\u00fcmk\u00fcn”<\/b><\/p>\n

Ara\u015ft\u0131rmac\u0131lar, \u00e7al\u0131\u015fmalar\u0131n\u0131n travmatik bir olaydan zarar g\u00f6rm\u00fc\u015f ki\u015filerin tedavisinde etkileri olabilece\u011fini<\/strong> d\u00fc\u015f\u00fcn\u00fcyorlar. \u00c7\u00fcnk\u00fc ara\u015ft\u0131rmalar\u0131n\u0131n, beyindeki an\u0131lar\u0131n nas\u0131l de\u011fi\u015ftirilebilece\u011fini g\u00f6sterdi\u011fini <\/strong>s\u00f6yl\u00fcyorlar. \u00d6rne\u011fin, bir haf\u0131za taze ise, yani ge\u00e7 do\u011fan n\u00f6ronlar etkinle\u015ftirilmi\u015fse, bu haf\u0131za orta ve erken do\u011fan n\u00f6ronlara depolanmak \u00fczere aktar\u0131lmadan \u00f6nce hala de\u011fi\u015ftirilebilir.<\/strong> Ancak ge\u00e7 do\u011fan n\u00f6ronlar bir kez etkinle\u015ftirildi\u011finde ve haf\u0131za orada depoland\u0131\u011f\u0131nda, de\u011fi\u015ftirilmesi giderek zorla\u015f\u0131r. Temelde, bir haf\u0131za ne kadar uzun s\u00fcre beyinde depolanm\u0131\u015fsa, onu de\u011fi\u015ftirmek o kadar zor olur.<\/p>\n

\u00c7al\u0131\u015fman\u0131n ilk yazar\u0131 Vilde Kveim, “An\u0131lar\u0131n beyinde ne kadar dinamik bir \u015fekilde depoland\u0131\u011f\u0131, beynin muazzam bellek kapasitesinin temelini olu\u015fturan esnekli\u011finin kan\u0131t\u0131d\u0131r” diyor.<\/p>\n

Kveim ve ekibi taraf\u0131ndan y\u00fcr\u00fct\u00fclen \u00e7al\u0131\u015fmayla bu esnekli\u011fin anla\u015f\u0131lmas\u0131, bilim insanlar\u0131n\u0131n bir g\u00fcn insanlar\u0131n sonsuza dek kaybettiklerini d\u00fc\u015f\u00fcnd\u00fckleri an\u0131lara nas\u0131l eri\u015febileceklerini veya g\u00fcnl\u00fck hayat\u0131 patolojik bir \u015fekilde etkileyen ac\u0131 verici an\u0131lar\u0131 nas\u0131l susturabileceklerini anlamalar\u0131na yard\u0131mc\u0131 olabilir.<\/p>\n\n

Kaynak\u00a0 :\u00a0https:\/\/www.donanimhaber.com\/beynin-her-bir-ani-icin-uc-kopya-yarattigi-tespit-edildi–180799<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

T\u0131pk\u0131 yedekli bilgisayar sistemleri gibi, insan beyninin tek bir an\u0131y\u0131 depolamak i\u00e7in \u00fc\u00e7 farkl\u0131 n\u00f6ron seti kulland\u0131\u011f\u0131 ortaya kondu.\u00a0Basel \u00dcniversitesi’nin Biozentrum’undaki ara\u015ft\u0131rmac\u0131lar, farelerin beyinlerini g\u00f6r\u00fcnt\u00fcleyerek yeni bir an\u0131 …<\/p>\n","protected":false},"author":1,"featured_media":82765,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[2984,3065,5058,5059,951],"class_list":["post-82764","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teknoloji","tag-ani","tag-beyin","tag-hafiza","tag-noron","tag-orta"],"_links":{"self":[{"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/posts\/82764","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/comments?post=82764"}],"version-history":[{"count":1,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/posts\/82764\/revisions"}],"predecessor-version":[{"id":82768,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/posts\/82764\/revisions\/82768"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/media\/82765"}],"wp:attachment":[{"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/media?parent=82764"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/categories?post=82764"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/tags?post=82764"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}