{"id":39538,"date":"2020-01-01T00:28:38","date_gmt":"2019-12-31T21:28:38","guid":{"rendered":"https:\/\/bilimvegelecek.com.tr\/?p=39538"},"modified":"2020-01-01T00:30:21","modified_gmt":"2019-12-31T21:30:21","slug":"80-milyon-yildir-kopekler-ile-ortak-bir-ozellige-sahibiz","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2020\/01\/01\/80-milyon-yildir-kopekler-ile-ortak-bir-ozellige-sahibiz","title":{"rendered":"80 milyon y\u0131ld\u0131r k\u00f6pekler ile ortak bir \u00f6zelli\u011fe sahibiz"},"content":{"rendered":"

Emory \u00dcniversitesi\u2019nden biliminsanlar\u0131 taraf\u0131ndan yap\u0131lan \u00e7al\u0131\u015fmada, k\u00f6peklerin nesneleri alg\u0131lamak ve i\u015flemek i\u00e7in beyinlerinin insan beynine benzer bir b\u00f6lgesini kulland\u0131klar\u0131 raporland\u0131.<\/p>\n

K\u00f6pek beyinleri, insanlarda say\u0131ya ve nesnelere duyarl\u0131 olan beyin b\u00f6lgelerinin \u00e7al\u0131\u015fma prensibine benzer bir \u00e7al\u0131\u015fma mekanizmas\u0131na sahip. Biology Letters portal\u0131nda yay\u0131nlanan \u00e7al\u0131\u015fmada memelilerin evrimi boyunca s\u0131k\u0131 bir bi\u00e7imde korunan ortak sinirsel mekanizmaya odaklan\u0131ld\u0131.<\/p>\n

Emory \u00dcniversitesi\u2019nde psikoloji alan\u0131nda \u00e7al\u0131\u015fmalar yapan Profes\u00f6r Gregory Berns, \u201c\u00c7al\u0131\u015fmam\u0131z k\u00f6peklerin nesneyi i\u015fleme mekanizmalar\u0131n\u0131n insanlar\u0131nkine benzer bir \u015fekilde oldu\u011funu g\u00f6stermekle kalm\u0131yor, ayn\u0131 zamanda bunu ger\u00e7ekle\u015ftirmek i\u00e7in e\u011fitilmeleri gerekmedi\u011fini g\u00f6steriyor\u201d a\u00e7\u0131klamalar\u0131nda bulundu.<\/p>\n

Ayn\u0131 b\u00f6l\u00fcmde \u00e7al\u0131\u015fma y\u00fcr\u00fcten ba\u015fka bir biliminsan\u0131 olan Profes\u00f6r Stella Lourenco, \u201cBu \u00e7al\u0131\u015fma ile birlikte hem insanlardaki hem de di\u011fer t\u00fcrlerdeki sinirsel mekanizmalar\u0131 anlayabiliyoruz. B\u00f6ylelikle hem beyinlerimizin nas\u0131l evrimle\u015fti\u011fini hem de \u015fimdi nas\u0131l \u00e7al\u0131\u015ft\u0131klar\u0131 hakk\u0131nda bilgi sahibi olabiliyoruz\u201d dedi.<\/p>\n

\u00c7al\u0131\u015fmada k\u00f6peklerin beyin aktivitelerinin g\u00f6zlenmesi i\u00e7in manyetik rezonans g\u00f6r\u00fcnt\u00fcleme sistemleri (fMRI) kullan\u0131ld\u0131. K\u00f6peklerin bir ekran \u00fczerinde g\u00f6r\u00fcnt\u00fclenen noktalara odakland\u0131klar\u0131 fark edildi. \u00c7al\u0131\u015fman\u0131n sonu\u00e7lar\u0131, k\u00f6pek beyinlerindeki ilgili b\u00f6lgenin nokta say\u0131s\u0131ndaki farkl\u0131l\u0131klara yan\u0131t verdi\u011fini g\u00f6sterdi. Bunun \u00fczerine ara\u015ft\u0131rmac\u0131lar, noktalar\u0131n alan\u0131n\u0131 sabit tuttular ve ekrana yans\u0131t\u0131lan noktalar\u0131n say\u0131s\u0131nda de\u011fi\u015fiklikler yapt\u0131lar. B\u00f6ylelikle k\u00f6pek beyinlerinde nokta say\u0131s\u0131n\u0131n de\u011fi\u015fimine tepki meydana gelip gelmedi\u011fi ara\u015ft\u0131r\u0131lm\u0131\u015f oldu.<\/p>\n

Nesnelerin say\u0131s\u0131na odaklanma \u00f6zellikle de yakla\u015fan avc\u0131lar\u0131n say\u0131s\u0131n\u0131n ve yiyecek arama s\u0131ras\u0131nda fark edilen besinin miktar\u0131n\u0131n anla\u015f\u0131lmas\u0131 gibi durumlar nedeniyle olduk\u00e7a \u00f6nemlidir. Farkl\u0131 miktarlardaki nesneler aras\u0131nda se\u00e7im yapma \u00fczerinden k\u00f6peklerle yap\u0131lan ba\u015fka bir \u00e7al\u0131\u015fmada da k\u00f6peklerin say\u0131sal duyarl\u0131l\u0131klar\u0131 g\u00f6zlenmi\u015fti. Daha \u00f6nceki \u00e7al\u0131\u015fmalar, k\u00f6pekler ile insanlar\u0131n son ortak atas\u0131n\u0131n 80 milyon y\u0131l \u00f6nce g\u00f6zlendi\u011fini ortaya \u00e7\u0131karm\u0131\u015ft\u0131. Bu durum, bahsedilen \u00f6zelli\u011fin de 80 milyon y\u0131ldan eskiye dayand\u0131\u011f\u0131n\u0131 g\u00f6stermekte.<\/p>\n

Kaynak:<\/strong>https:\/\/www.sciencedaily.com\/releases\/2019\/12\/191218153339.htm<\/p>\n","protected":false},"excerpt":{"rendered":"

Emory \u00dcniversitesi\u2019nden biliminsanlar\u0131 taraf\u0131ndan yap\u0131lan \u00e7al\u0131\u015fmada, k\u00f6peklerin nesneleri alg\u0131lamak ve i\u015flemek i\u00e7in beyinlerinin insan beynine benzer bir b\u00f6lgesini kulland\u0131klar\u0131 raporland\u0131. K\u00f6pek beyinleri, insanlarda say\u0131ya ve nesnelere duyarl\u0131 olan beyin b\u00f6lgelerinin \u00e7al\u0131\u015fma prensibine benzer bir \u00e7al\u0131\u015fma mekanizmas\u0131na sahip. Biology Letters portal\u0131nda yay\u0131nlanan \u00e7al\u0131\u015fmada memelilerin evrimi boyunca s\u0131k\u0131 bir bi\u00e7imde korunan ortak sinirsel mekanizmaya odaklan\u0131ld\u0131. Emory \u00dcniversitesi\u2019nde […]<\/p>\n","protected":false},"author":1390,"featured_media":39541,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19],"tags":[254,200,555,3682],"class_list":["post-39538","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilim-gundemi","tag-beyin","tag-evrim","tag-insan","tag-kopek"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t