[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.untr.cz\/pravdy-a-myty-o-levacich\/#Article","mainEntityOfPage":"https:\/\/www.untr.cz\/pravdy-a-myty-o-levacich\/","headline":"Pravdy a m\u00fdty o lev\u00e1c\u00edch","name":"Pravdy a m\u00fdty o lev\u00e1c\u00edch","description":"Genetika \u017de je levorukost \u010di pravorukost d\u00e1na geneticky se d\u00e1vno u\u010d\u00ed na […]","datePublished":"2019-09-10","dateModified":"2023-06-07","author":{"@type":"Person","@id":"https:\/\/www.untr.cz\/author\/#Person","name":"","url":"https:\/\/www.untr.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/1aa4d33840e2afc29128e2a456d425ca0d17b173c888af2db652b1d34fe6f93d?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/1aa4d33840e2afc29128e2a456d425ca0d17b173c888af2db652b1d34fe6f93d?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"untr.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.untr.cz\/wp-content\/uploads\/img_a354675_w3773_t1569262645.jpg","url":"https:\/\/www.untr.cz\/wp-content\/uploads\/img_a354675_w3773_t1569262645.jpg","height":0,"width":0},"url":"https:\/\/www.untr.cz\/pravdy-a-myty-o-levacich\/","about":["V\u011bda"],"wordCount":441,"articleBody":"Genetika\t\u017de je levorukost \u010di pravorukost d\u00e1na geneticky se d\u00e1vno u\u010d\u00ed na st\u0159edn\u00edch \u0161kol\u00e1ch a gymn\u00e1zi\u00edch. Ned\u00e1vno v\u0161ak bylo zji\u0161t\u011bno, \u017ee se nejedn\u00e1 o jeden gen, jak se tvrd\u00edvalo, ale rovnou o \u010dty\u0159i. Krom\u011b gen\u016f v\u0161ak mohou lateralitu ovlivnit i n\u011bjak\u00e9 jin\u00e9 vlivy v pr\u016fb\u011bhu prenat\u00e1ln\u00edho v\u00fdvoje.\t\tJsou lev\u00e1ci chyt\u0159ej\u0161\u00ed?\tOb\u010das se objevuje tvrzen\u00ed, \u017ee levoruc\u00ed lid\u00e9 jsou chyt\u0159ej\u0161\u00ed, schopn\u011bj\u0161\u00ed a celkov\u011b \u00fasp\u011b\u0161n\u011bj\u0161\u00ed. Rozd\u00edly mezi prav\u00e1ky a lev\u00e1ky jsou v\u0161ak jen zanedbateln\u00e9. Existuj\u00ed n\u00e1zory, \u017ee kv\u016fli men\u0161\u00edmu zastoupen\u00ed lev\u00e1k\u016f ve spole\u010dnosti, kter\u00e1 je p\u0159ev\u00e1\u017en\u011b pravoruk\u00e1, se musej\u00ed levoruc\u00ed v\u00edce p\u0159izp\u016fsobovat a b\u00fdt \u0161ikovn\u011bj\u0161\u00ed. To p\u0159edev\u0161\u00edm v d\u011btstv\u00ed m\u016f\u017ee v\u00e9st k lep\u0161\u00edmu rozvoji n\u011bkter\u00fdch schopnost\u00ed. Co v\u0161ak bylo prok\u00e1z\u00e1no, tak \u017ee n\u011bkter\u00e9 v\u00fd\u0161e zm\u00edn\u011bn\u00e9 geny zp\u016fsobuj\u00edc\u00ed levorukost tak\u00e9 odpov\u00eddaj\u00ed za v\u00fdvoj \u0159e\u010dov\u00fdch center v mozku. Je tak pravd\u011bpodobn\u00e9, \u017ee lev\u00e1ci maj\u00ed predispozice k lep\u0161\u00ed komunikaci a \u0159e\u0161en\u00ed verb\u00e1ln\u00edch \u00fakol\u016f.\t\tLevorukost a zdrav\u00ed\tLevorukost b\u00fdv\u00e1 ob\u010das tak\u00e9 asociov\u00e1na s n\u011bkter\u00fdmi zdravotn\u00edmi riziky. A skute\u010dn\u011b, n\u011bkter\u00e9 z gen\u016f zp\u016fsobuj\u00edc\u00edch levorukost jsou spojeny tak\u00e9 s v\u011bt\u0161\u00edm rizikem pro n\u011bkter\u00e1 onemocn\u011bn\u00ed, konkr\u00e9tn\u011b s Parkinsonovou nemoc\u00ed, Alzheimerovou chorobou a schizofreni\u00ed. Pokud jste v\u0161ak lev\u00e1kem, ned\u011bste se! Predispozice neznamenaj\u00ed, \u017ee se nemoc nutn\u011b projev\u00ed, nav\u00edc tyto konkr\u00e9tn\u00ed geny p\u0159edstavuj\u00ed jen mal\u00e9 riziko, p\u0159edstavuj\u00edc\u00ed jen minim\u00e1ln\u00ed rozd\u00edl oproti pravoruk\u00fdm. Jin\u00e9 zdravotn\u00ed v\u00fdhody \u010di nev\u00fdhody levorukosti nebyly zji\u0161t\u011bny, tak\u017ee a\u0165 u\u017e jste lev\u00e1k \u010di prav\u00e1k, je nejd\u016fle\u017eit\u011bj\u0161\u00ed db\u00e1t na spr\u00e1vnou fyzickou i du\u0161evn\u00ed \u017eivotospr\u00e1vu.\t\tLevorukost (ne)lze p\u0159eu\u010dit\tV pr\u016fb\u011bhu historie panovalo velk\u00e9 stigma v\u016f\u010di lev\u00e1k\u016fm a po sv\u011bt\u011b bylo praktikov\u00e1no zna\u010dn\u00e9 mno\u017estv\u00ed zp\u016fsob\u016f, jak lev\u00e1ky p\u0159eu\u010dit. Dnes jsou tyto \u010dasy na\u0161t\u011bst\u00ed za n\u00e1mi. Jak ji\u017e bylo \u0159e\u010deno, t\u00edm, \u017ee je levorukost z velk\u00e9 \u010d\u00e1sti vrozen\u00e1, b\u00fdv\u00e1 p\u0159eu\u010den\u00ed na preferenci prav\u00e9 ruky obt\u00ed\u017en\u00e9 a\u017e nemo\u017en\u00e9. P\u0159eu\u010dov\u00e1n\u00ed nav\u00edc m\u016f\u017ee b\u00fdt pro d\u011btskou psychiku zna\u010dn\u011b \u0161kodliv\u00e9.                                                                                                                                                                                                                                                                                                                                                                                        4.1\/5 - (14 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Pravdy a m\u00fdty o lev\u00e1c\u00edch","item":"https:\/\/www.untr.cz\/pravdy-a-myty-o-levacich\/#breadcrumbitem"}]}]