Zuwa yanzu mun karanta cewa jaririn ciki yana bunkasa jinsa tsakanin (kusan) makonni 14 da 16; Y hakan zai baka damar jin sautukan ciki kamar bugun zuciya, ko kuma yadda jini yake gudana. Mun kuma san cewa daga mako na 27, kunne ya kan zama cikakke, jarirai suna iya tsinkayar sauti a jikin uwa; bisa ga wannan binciken da SINC ya yi, an sake tsarawa da jijiyoyin sauraro kuma tsarin juyayi ya balaga, kuma wannan ya zama tushe don bincika ƙwarewar haihuwa dangane da tsinkayen sauti da samfura na tushen jijiyoyi.
Yanzu, har zuwa yanzu ban sami wani rikodin kowane nazari game da halaye da ƙarshen wannan da nake gabatar muku yanzu ba: Cibiyar Marqués (Taimakawa haifuwa, Gynecology and Obstetrics Clinic in Barcelona), an buga a cikin mujallar Medungiyar Ultrasound ta Biritaniya, wani binciken farko da duniya tayi akan jin tayi. Sun gano mahimman tsari don su ji kamar mu, don haka sautin ya isa gare su yadda ya kamata a cikin ƙarfi ba tare da murdiya ba.
Amma yaya hakan zai kasance idan mahaifar ba ta da sauti?
Da kyau, a cikin al'ada, ee, kamar yadda kuka ji shi: an sanya lasifika a cikin farji, don haka tayi zai iya saurara (kusan) da irin ƙarfin da ake fitar da kiɗan. Yayinda gabobin ke rufe (farjin), sautin ba ya warwatse, kuma ban da wannan, sautin ba dole ne ya ratsa bangon ciki ba, sai bangon farji da mahaifa.
Wannan bincike ya tabbatar da cewa jarirai suna sauraro daga sati na 16 na ciki; Ka tuna cewa har zuwa yanzu akwai shakku da yawa game da aikin kunnen da aka riga aka kafa
Mahalarta binciken sun kasance mata masu juna biyu tsakanin makonni 14 zuwa 39 na ciki. Yanayin tayi don jin kida an lura dashi ta duban dan tayi, emitted duka abdominally da mara; kuma an kwatanta sakamako ta hanyar fitar da tsawa (ba tare da kiɗa ba) daga farjin.
Menene tayi tayi lokacin da take sauraren kiɗa?
Da farko dai, bayyana cewa waƙar da aka zaɓa don gudanar da binciken ita ce ta Johann Sebastian Bach (La Partita a cikin A. Minananan foran Fusaɗa shi kadai - BWV 1013)
A ka'ida, idan 'yan tayi sun farka kai tsaye suna motsa kawunansu da gabobinsu; su ma suna fitar da harsunansu. Amma kiɗan haifar da martani na ƙungiyoyin saƙo ta hanyar kunna da'irorin kwakwalwa don haɓaka harshe da sadarwa, daga gare ta ne ake fara koyo a cikin mahaifa. Amsar jariri ga kiɗa takamaiman motsi ne na baki da harshe, kamar yadda ake iya gani a bidiyo mai zuwa:
Menene abubuwan bincike suka bayar?
- An nuna tayi don jin daga makon 16 na ciki.
- Yana bayarda damar cire begen tayi.
- Mahaifiyar na iya tabbatar da lafiyar ɗan tayi.
- Mun gano dadaddun da'irorin kwakwalwar da ke cikin sadarwa. Bayan jin kida, tayi tana amsawa da motsawar murya, mataki kafin waka da magana.
Labarin ya ba ni mamaki matuka a cikin sassa daya, ina tsammanin kamar sauran mutane. Hakanan ya bar min wasu tambayoyin da nake fatan zan warware su wata rana; Misali, Na fahimci yuwuwar aikace-aikacen irin wannan gwajin, amma ina so in san ko akwai yiwuwar hadari, kuma idan ana iya tabbatar da su ta hanyar fa'idodin ina kuma tunanin cewa Yanayi na iya hango hikima ta hango murfin mahaifa cikin hikima dace), Don haka ba zai cutar da sanya jarirai su saurari kiɗa sosai ba?Tabbas ya dogara da nau'in kiɗa.
A gefe guda kuma, kar mu manta cewa hanyar kunnen yara karami ce, kuma hakan na haifar da bambanci a kan adadin decibel da suke tsinkaye, idan aka kwatanta da manya. Su ma sun fi samun rauni saboda kwanyar tasu ta fi siriri.
Na kuma bar kaina in tuna da hakan shafe tsawon lokaci ga makamashin dan tayi (a wannan yanayin, duban duban da aka yi don bincika halayen jarirai), yana da alaƙa da haɗari daban-daban, idan ana amfani da dabarar ba tare da nuna bambanci ba.