{"id":14124,"date":"2020-08-25T02:35:48","date_gmt":"2020-08-25T02:35:48","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=14124"},"modified":"2020-08-25T02:35:48","modified_gmt":"2020-08-25T02:35:48","slug":"expressive-eyebrows-evolutionary-edge-modern-humans","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/tr\/science\/human-evolution\/expressive-eyebrows-evolutionary-edge-modern-humans\/","title":{"rendered":"\u0130fadeli Ka\u015flar: Modern insanlar i\u00e7in evrimsel bir avantaj"},"content":{"rendered":"

\u0130fadeli Ka\u015flar: Modern insanlar i\u00e7in evrimsel bir avantaj<\/h2>\n\n

Ka\u015f \u00e7\u0131k\u0131nt\u0131lar\u0131n\u0131n evrimi<\/h2>\n\n

Antik insanlar, onlarca y\u0131ld\u0131r bilim insanlar\u0131n\u0131 \u015fa\u015f\u0131rtan belirgin ka\u015f \u00e7\u0131k\u0131nt\u0131lar\u0131na sahipti. Ara\u015ft\u0131rmac\u0131lar, ba\u015f yaralanmalar\u0131ndan korunma, g\u00f6zleri koruma ve sa\u00e7lar\u0131n \u00f6n\u00fcne ge\u00e7me gibi ama\u00e7lar\u0131n\u0131 a\u00e7\u0131klamak i\u00e7in \u00e7e\u015fitli teoriler \u00f6nerdiler. Ancak son \u00e7al\u0131\u015fmalar, bu geleneksel a\u00e7\u0131klamalar\u0131 sorgulad\u0131.<\/p>\n\n

Sosyal \u0130\u015flev Hipotezi<\/h2>\n\n

\u0130ngiltere’deki York \u00dcniversitesi’nden bir ara\u015ft\u0131rma ekibi, a\u015f\u0131r\u0131 boyutlu ka\u015f \u00e7\u0131k\u0131nt\u0131lar\u0131n\u0131n bir bask\u0131nl\u0131k i\u015fareti olarak hizmet etti\u011fini \u00f6ne s\u00fcren sosyal i\u015flev hipotezini ara\u015ft\u0131rd\u0131. Bu \u00e7\u0131k\u0131nt\u0131lar\u0131n, daha heybetli bir g\u00f6r\u00fcn\u00fcm yaratmak, potansiyel tehditleri cayd\u0131rmak ve sosyal gruplar i\u00e7inde stat\u00fc aktarmak i\u00e7in \u00f6ne \u00e7\u0131kt\u0131\u011f\u0131n\u0131 teorile\u015ftirdiler.<\/p>\n\n

Mekanik Stres ve Y\u00fcz Anatomisi<\/h2>\n\n

Bu hipotezi test etmek i\u00e7in ara\u015ft\u0131rmac\u0131lar, antik bir insan kafatas\u0131n\u0131n 3 boyutlu bir modelini olu\u015fturdular ve ka\u015f \u00e7\u0131k\u0131nt\u0131s\u0131n\u0131n boyutuyla deneyler yapt\u0131lar. \u00c7\u0131k\u0131nt\u0131n\u0131n boyutunu k\u00fc\u00e7\u00fcltmenin, \u00e7i\u011fneme s\u0131ras\u0131nda kafatas\u0131ndaki mekanik stresi \u00f6nemli \u00f6l\u00e7\u00fcde azaltmad\u0131\u011f\u0131n\u0131 ke\u015ffettiler. Ayr\u0131ca ka\u015f, al\u0131n ile g\u00f6z yuvalar\u0131 aras\u0131ndaki bo\u015flu\u011fu doldurmak i\u00e7in gerekenden daha b\u00fcy\u00fckt\u00fc.<\/p>\n\n

Davran\u0131\u015fsal G\u00f6zlemler<\/h2>\n\n

Antropolog Grover Krantz, halka a\u00e7\u0131k yerlerde Homo erectus’un ka\u015f \u00e7\u0131k\u0131nt\u0131s\u0131n\u0131n bir kopyas\u0131n\u0131 takarak bir deney y\u00fcr\u00fctt\u00fc. \u0130nsanlar\u0131n kendisinden ka\u00e7\u0131nma e\u011filiminde oldu\u011funu g\u00f6zlemledi, bu da ka\u015f \u00e7\u0131k\u0131nt\u0131s\u0131n\u0131n bir korkutma duygusu uyand\u0131rm\u0131\u015f olabilece\u011fini d\u00fc\u015f\u00fcnd\u00fcr\u00fcyor. Bu g\u00f6zlem, sosyal i\u015flev hipotezini daha da destekledi.<\/p>\n\n

Y\u00fcz K\u00fc\u00e7\u00fclmesi ve Sosyal \u0130leti\u015fim<\/h2>\n\n

Zamanla, insan y\u00fczleri k\u00fc\u00e7\u00fclmeye ba\u015flad\u0131; bunun nedeni muhtemelen pi\u015firme y\u00f6ntemlerindeki ilerlemeler veya aktivite seviyelerindeki de\u011fi\u015fikliklerdi. Y\u00fczler k\u00fc\u00e7\u00fcld\u00fck\u00e7e atalar\u0131m\u0131z, gruplar aras\u0131 temas ve i\u015fbirli\u011fin artmas\u0131yla daha sosyal hale geldi. Ara\u015ft\u0131rmac\u0131lar, ka\u015f \u00e7\u0131k\u0131nt\u0131lar\u0131n\u0131n kayb\u0131n\u0131n daha ince duygusal ifadelere olanak tan\u0131d\u0131\u011f\u0131na ve ileti\u015fimi ve i\u015fbirli\u011fini geli\u015ftirdi\u011fine inan\u0131yor.<\/p>\n\n

Hareketli Ka\u015flar ve \u0130nce \u0130\u015faretler<\/h2>\n\n

Modern insanlar, son derece ifadeli ve ince duygular\u0131 iletmek i\u00e7in \u00e7ok \u00f6nemli olan hareketli ka\u015flara sahiptir. Belirgin bir ka\u015f k\u00f6pr\u00fcs\u00fcn\u00fcn k\u0131s\u0131tlamalar\u0131 olmadan ka\u015flar\u0131m\u0131z, \u015fa\u015fk\u0131nl\u0131k, \u015f\u00fcphecilik ve kafa kar\u0131\u015f\u0131kl\u0131\u011f\u0131 gibi geni\u015f bir olumlu duygu yelpazesini iletebilir.<\/p>\n\n

Uzman Perspektifleri<\/h2>\n\n

Sosyal i\u015flev hipotezi ivme kazan\u0131yor olsa da, baz\u0131 uzmanlar \u015f\u00fcpheci olmaya devam ediyor. Paleoantropolog Ashley Hammond, Homo heidelbergensis’in kal\u0131n ka\u015f kemiklerinin daha y\u00fcksek testosteron seviyelerinden kaynaklanm\u0131\u015f olabilece\u011fini savunuyor. Bununla birlikte, yeni ara\u015ft\u0131rma, ileti\u015fimin ve i\u015fbirli\u011finin t\u00fcr\u00fcm\u00fcz\u00fcn hayatta kalmas\u0131 i\u00e7in hayati \u00f6nem ta\u015f\u0131d\u0131\u011f\u0131na dair b\u00fcy\u00fcyen kan\u0131tlar k\u00fcmesine katk\u0131da bulunuyor.<\/p>\n\n

\u0130nsan Evrimi \u0130\u00e7in Etkileri<\/h2>\n\n

Ka\u015f \u00e7\u0131k\u0131nt\u0131lar\u0131n\u0131n incelenmesi, insan ileti\u015fiminin ve sosyal davran\u0131\u015f\u0131n\u0131n evrimi hakk\u0131nda bilgiler sa\u011flar. Fiziksel anatomi ile sosyal dinamikler aras\u0131ndaki etkile\u015fimi vurgular ve ifadeli ka\u015flar\u0131m\u0131z\u0131n, modern insanlar\u0131n ba\u015far\u0131s\u0131nda \u00f6nemli bir rol oynam\u0131\u015f olabilece\u011fini d\u00fc\u015f\u00fcnd\u00fcr\u00fcr.<\/p>","protected":false},"excerpt":{"rendered":"

\u0130fadeli Ka\u015flar: Modern insanlar i\u00e7in evrimsel bir avantaj Ka\u015f \u00e7\u0131k\u0131nt\u0131lar\u0131n\u0131n evrimi Antik insanlar, onlarca y\u0131ld\u0131r bilim insanlar\u0131n\u0131 \u015fa\u015f\u0131rtan belirgin ka\u015f \u00e7\u0131k\u0131nt\u0131lar\u0131na sahipti. Ara\u015ft\u0131rmac\u0131lar, ba\u015f yaralanmalar\u0131ndan korunma, g\u00f6zleri koruma ve sa\u00e7lar\u0131n…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19000],"tags":[136,18052,7210,18998,18999],"class_list":["post-14124","post","type-post","status-publish","format-standard","hentry","category-human-evolution","tag-evolution","tag-human-anatomy","tag-cooperation","tag-eyebrows","tag-social-communication"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/14124","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/comments?post=14124"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/14124\/revisions"}],"predecessor-version":[{"id":14125,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/14124\/revisions\/14125"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/media?parent=14124"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/categories?post=14124"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/tags?post=14124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}