{"id":465,"date":"2023-12-03T12:07:19","date_gmt":"2023-12-03T12:07:19","guid":{"rendered":"http:\/\/www.resitozkanca.org\/?p=465"},"modified":"2023-12-03T12:07:21","modified_gmt":"2023-12-03T12:07:21","slug":"465","status":"publish","type":"post","link":"http:\/\/www.resitozkanca.com.tr\/?p=465","title":{"rendered":""},"content":{"rendered":"\n<pre id=\"block-0b39bcb3-d970-4678-8dd3-b8055196a701\" class=\"wp-block-preformatted\"><strong>Dopamin seviyelerindeki h\u0131zl\u0131 de\u011fi\u015fikliklerin y\u00f6nlendirdi\u011fi insan davran\u0131\u015f\u0131<\/strong><\/pre>\n\n\n\n<pre id=\"block-10e56aee-b66f-4251-8264-d0f86048ee81\" class=\"wp-block-preformatted\"><\/pre>\n\n\n\n<pre id=\"block-9d63f6ed-53a3-422c-bad1-23eb6313ebd5\" class=\"wp-block-preformatted\">\u00c7al\u0131\u015fma, kat\u0131l\u0131mc\u0131lar derin beyin stim\u00fclasyonu ameliyat\u0131 s\u0131ras\u0131nda bilgisayar oyunu oynarken dopamin seviyelerini \u00f6l\u00e7t\u00fc. \nKat\u0131l\u0131mc\u0131lar ameliyathanede uyan\u0131kken basit bir bilgisayar oyunu oynatt\u0131r\u0131ld\u0131lar. Oyunu oynarken, beynin bili\u015f, karar verme ve koordineli hareketler i\u00e7in \u00f6nemli olan k\u0131sm\u0131 olan striatumda dopamin \u00f6l\u00e7\u00fcmleri yap\u0131ld\u0131.\n\n\u00d6zet:\nYeni bir \u00e7al\u0131\u015fma, insan beynindeki dopamin sal\u0131n\u0131m\u0131n\u0131n hem \u00f6d\u00fcl hem de ceza tahmin hatalar\u0131n\u0131n kodlanmas\u0131nda \u00f6nemli bir rol oynad\u0131\u011f\u0131n\u0131 g\u00f6steriyor. Bu, dopaminin hem olumlu hem de olumsuz deneyimlerden \u00f6\u011frenme s\u00fcrecine dahil oldu\u011fu ve beynin bu deneyimlerin sonu\u00e7lar\u0131na g\u00f6re davran\u0131\u015f\u0131n\u0131 ayarlamas\u0131na ve uyarlamas\u0131na izin verdi\u011fi anlam\u0131na gelir.\nOlumlu ve olumsuz deneyimlerden \u00f6\u011frendi\u011fimizde insan beyninde neler olur? Bu soruyu yan\u0131tlamak ve karar verme s\u00fcrecini ve insan davran\u0131\u015f\u0131n\u0131 daha iyi anlamak i\u00e7in bilim insanlar\u0131 dopamin \u00fczerinde \u00e7al\u0131\u015f\u0131yor.\n\nDopamin, beyinde \u00fcretilen ve kimyasal haberci olarak g\u00f6rev yapan, beyindeki sinir h\u00fccreleri ile v\u00fccut aras\u0131ndaki ileti\u015fimi kolayla\u015ft\u0131ran bir n\u00f6rotransmiterdir. Hareket, bili\u015f ve \u00f6\u011frenme gibi i\u015flevlerde rol oynar. Dopamin en \u00e7ok olumlu duygularla olan ili\u015fkisiyle bilinirken, bilim insanlar\u0131 onun olumsuz deneyimlerdeki rol\u00fc de ara\u015ft\u0131r\u0131yor.\n\u015eimdi, Wake Forest \u00dcniversitesi T\u0131p Fak\u00fcltesi'ndeki ara\u015ft\u0131rmac\u0131lar taraf\u0131ndan yap\u0131lan yeni bir \u00e7al\u0131\u015fma, insan beynindeki dopamin sal\u0131n\u0131m\u0131n\u0131n hem \u00f6d\u00fcl hem de ceza tahmin hatalar\u0131n\u0131n kodlanmas\u0131nda \u00e7ok \u00f6nemli bir rol oynad\u0131\u011f\u0131n\u0131 g\u00f6steriyor. Bu, dopaminin hem olumlu hem de olumsuz deneyimlerden \u00f6\u011frenme s\u00fcrecine dahil oldu\u011fu ve beynin bu deneyimlerin sonu\u00e7lar\u0131na g\u00f6re davran\u0131\u015f\u0131n\u0131 ayarlamas\u0131na ve uyarlamas\u0131na izin verdi\u011fi anlam\u0131na gelir.\n\n\"Daha \u00f6nce yap\u0131lan ara\u015ft\u0131rmalar, dopaminin, hayvanlar\u0131n '\u00f6d\u00fcllendirici' (ve muhtemelen 'cezaland\u0131r\u0131c\u0131') deneyimlerden \u00f6\u011frenmesinde \u00f6nemli bir rol oynad\u0131\u011f\u0131n\u0131 g\u00f6stermi\u015fti. Ancak dopaminin insan beyninde h\u0131zl\u0131 zaman \u00f6l\u00e7eklerinde ne yapt\u0131\u011f\u0131n\u0131 do\u011frudan de\u011ferlendirmek i\u00e7in \u00e7ok az \u00e7al\u0131\u015fma yap\u0131ld\u0131. \u00c7al\u0131\u015fma Wake Forest \u00dcniversitesi T\u0131p Fak\u00fcltesi'nde fizyoloji, farmakoloji ve beyin cerrahisi alan\u0131nda do\u00e7ent olan Ph.D. Kenneth T. Kishida taraf\u0131ndan yap\u0131ld\u0131. \"Bu, dopaminin \u00f6d\u00fclleri ve cezalar\u0131 nas\u0131l kodlad\u0131\u011f\u0131n\u0131 ve dopaminin g\u00fcn\u00fcm\u00fcz\u00fcn en geli\u015fmi\u015f yapay zeka ara\u015ft\u0131rmalar\u0131nda kullan\u0131lan 'en uygun' \u00f6\u011fretim sinyalini yans\u0131t\u0131p yans\u0131tmad\u0131\u011f\u0131n\u0131 inceleyen ilk \u00e7al\u0131\u015fmad\u0131r.\"\n\nAra\u015ft\u0131rma i\u00e7in Kishida'n\u0131n ekibindeki ara\u015ft\u0131rmac\u0131lar, dopamin seviyelerini ger\u00e7ek zamanl\u0131 olarak (yani saniyede 10 \u00f6l\u00e7\u00fcm) tespit etmek ve \u00f6l\u00e7mek i\u00e7in makine \u00f6\u011frenimi ile e\u015fle\u015ftirilmi\u015f bir elektrokimyasal teknik olan h\u0131zl\u0131 taramal\u0131 d\u00f6ng\u00fcsel voltametriyi kulland\u0131lar. Ancak bu y\u00f6ntem zorludur ve yaln\u0131zca derin beyin stim\u00fclasyonu (DBS) beyin ameliyat\u0131 gibi invaziv prosed\u00fcrler s\u0131ras\u0131nda ger\u00e7ekle\u015ftirilebilir. DBS yayg\u0131n olarak Parkinson hastal\u0131\u011f\u0131, esansiyel tremor, obsesif kompulsif bozukluk ve epilepsi gibi durumlar\u0131n tedavisinde kullan\u0131l\u0131r.\n\nDerleyen Prof.Dr.Re\u015fit \u00d6zkanca\nhttps:\/\/www.sciencedaily.com\/releases\/2023\/12\/231201173208.htm\n1 Aral\u0131k 2023\nKaynak:\n\u00c7al\u0131\u015fma Science Advances'da yay\u0131nland\u0131.<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Dopamin seviyelerindeki h\u0131zl\u0131 de\u011fi\u015fikliklerin y\u00f6nlendirdi\u011fi insan davran\u0131\u015f\u0131 \u00c7al\u0131\u015fma, kat\u0131l\u0131mc\u0131lar derin beyin stim\u00fclasyonu ameliyat\u0131 s\u0131ras\u0131nda bilgisayar oyunu oynarken dopamin seviyelerini \u00f6l\u00e7t\u00fc. Kat\u0131l\u0131mc\u0131lar ameliyathanede uyan\u0131kken basit bir bilgisayar oyunu oynatt\u0131r\u0131ld\u0131lar. Oyunu oynarken, beynin bili\u015f, karar verme ve koordineli hareketler i\u00e7in \u00f6nemli olan k\u0131sm\u0131 olan striatumda dopamin \u00f6l\u00e7\u00fcmleri yap\u0131ld\u0131. \u00d6zet: Yeni bir \u00e7al\u0131\u015fma, insan beynindeki dopamin sal\u0131n\u0131m\u0131n\u0131n hem &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/www.resitozkanca.com.tr\/?p=465\" class=\"more-link\">Okumaya devam et<span class=\"screen-reader-text\"> &#8220;&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-465","post","type-post","status-publish","format-standard","hentry","category-genel-bilimsel-gelismeler"],"_links":{"self":[{"href":"http:\/\/www.resitozkanca.com.tr\/index.php?rest_route=\/wp\/v2\/posts\/465","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.resitozkanca.com.tr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.resitozkanca.com.tr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.resitozkanca.com.tr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.resitozkanca.com.tr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=465"}],"version-history":[{"count":1,"href":"http:\/\/www.resitozkanca.com.tr\/index.php?rest_route=\/wp\/v2\/posts\/465\/revisions"}],"predecessor-version":[{"id":466,"href":"http:\/\/www.resitozkanca.com.tr\/index.php?rest_route=\/wp\/v2\/posts\/465\/revisions\/466"}],"wp:attachment":[{"href":"http:\/\/www.resitozkanca.com.tr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=465"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.resitozkanca.com.tr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=465"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.resitozkanca.com.tr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=465"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}