Sadece İnsanlar Mı Sol Elini Kullanıyor?



Bu yazımızda sağlak ve solak kavramları sadece insanlara mı ait incelemesi yapacağız.

Solak olmak cahil kesim tarafından yıllarca bir hastalık olarak kabul edildi. Fakat araştırmacı bilim adamlarına göre solak olmak, kötü bir şey değil. Solak olmanın cahil kesim tarafından da kötü bir şey olmadığı birçok ülke başkanlarından, sporculara, yazarlara kadar giden bir solaklık akımıyla yok oldu. Almanya’da yapılan bir araştırma, küçük topla oynanan sporların ( masa tenisi, kriket) gibi topun çok hızlı zaman aralıklarıyla rakibiniz ve sizin aranızda geçtiği sporlar da solakların daha etkili olduğunu gösterdi.  Solaklık ve sağ elle yazmak beynin 2 ayrı bölümünden gelen yönetim mekanizmalarıyla alakalı bir durum. Sağ elle yazmak insanlar genelde solaklara göre konuşma, dil, yazı yazma, mantık ve bilim konularından. Solak insanlar ise genelde sağ eliyle yazanlara göre müzik, sanat, matematik ve algıda daha başarılı olarak biliniyor.


Sadece insanlarda mı solak ve sağlak ayrımı vardır?
Sadece insanlarda mı solak ve sağlak ayrımı vardır?

Yapılan araştırmalar ve incelemeler bu durumun sadece insanlara özel bir durum olmadığını göstermiş ve kanıtlamıştır. Hayvanlar aleminden de iki elden ve ayaktan birini daha fazla kullanma gibi bir eğilim söz konusu. Fakat farklı olan durum şu insanların %90’ı sağ elini kullanır geriye kalan % 10’luk kısım sol eline hakimdir. Hayvanlar aleminde ise genel eğilim insanlardaki gibi sağ eli ve ayağı kullanmaya yönelik değildir. Örneğim laboratuvar fareleri, kediler, goriller ve şempanzeler belli bir ayak ve elini kullanmayı tercih ediyor. Çünkü bu hayvanlarda insanlar gibi hareket kesinliği söz konusu yani sağ elini kullanarak yemek yiyen bir insanla sağ patisiyle kendini kaşıyan bir kedi arasında bir fark yok. Bunun dışında hayvanlar aleminin %50’si sağ kalan yarımlık kesimde sol el ve ayaklarını kullanıyor. İnsanın sağ elini kullanmaya yönelik ve yatkın olmasının sadece genetik olduğu düşünülmüyor, bu alışkanlığı çok eskilerden kaldığı düşünülüyor. Bilim insanları en az 2 milyon yıl öncesinden kalan bir alışkanlık olabilme olasılığına parmak basıyor. Bu tamamen hayvanlar ve insanlarda için beynin yarım kürelerinin belli başlı fonksiyonlarla uzmanlaşmasıyla alakalı bir durum gibi gözüküyor.




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