Dukanmu muna da kwakwalwa daban -daban: girma, siffa da yadda ake yin aiki sun bambanta daga mutum zuwa mutum. Shin wannan canjin yana da asali ko aka samu? Wannan tambayar ta daɗe ta kasance abin ƙyama, amma a yau, ci gaba a cikin ilimin ƙwayoyin cuta yana ba mu damar amsa shi aƙalla kaɗan. Lokacin da aka haifi jariri, kwakwalwarsu tana da kusan neuron biliyan 100. Hannun jari ba zai ƙara ƙaruwa ba, amma ƙirar kwakwalwa ba ta ƙare ba don duk wannan: kawai 10% na haɗin tsakanin neurons aka kafa.

Ƙarfafa muhalli

Sauran waɗannan da'irori na jijiyoyin jiki suna haifar da motsawar muhalli, duka "na ciki" (tasirin homon, abinci, cututtukan da suka kamu) da "waje" (koyo, hulɗar zamantakewa, yanayin al'adu, da sauransu). Sabbin dabaru na hoton kwakwalwa ne suka haifar da irin wannan ikirari. Ta hanyar lura da kwakwalwar pianists sama da shekaru da yawa, mun fahimci cewa kwakwalwa tana haɓaka gwargwadon aikin su mai zurfi. Don haka, muna lura da su a cikin ƙaƙƙarfan yankunan da ke ƙwarewa a cikin fasahar motsi na yatsun hannu da ji da gani.¹⁰. Haka kuma, wani bincike ya nuna cewa yankunan cortex da ke sarrafa wakilcin sararin samaniya sun fi bunƙasa a cikin direbobin tasi, gwargwadon adadin shekarun ƙwarewar tuƙi.¹¹. Waɗannan karatun suna nuna yadda ƙwarewar rayuwa ke canzawa da tsara aikin kwakwalwa. Wannan shi ake kira filastik kwakwalwa. Wannan ra'ayi yana da mahimmanci saboda yana nuna mahimmancin ilimin da aka samu na asali a cikin bambance -bambancen aiki da ɗabi'a tsakanin jinsi.

'Yan mata ba su da kyau a lissafi? Da gaske?

Misalin yadda ake tsammanin ƙasƙantar da mata a kimiyya yana haskakawa. Kowa ya riga ya ji wannan gaskiyar da ake zargi don bayyana rashin mata a wannan muhalli. Shugaban Jami'ar Harvard da kansa ya ba da wannan ka'idar a 2005: " Ƙananan wakilcin mata a cikin darussan kimiyya za a iya bayyana su ta rashin iyawarsu ta asali don samun nasara a waɗannan fannoni! Don haka, na asali ko aka samu? A cikin 1990, binciken ƙididdiga¹²wanda ya shafi ɗalibai miliyan goma sun tabbatar da cewa samari sun fi 'yan mata kyau wajen warware matsalar lissafi. Don haka an kammala cewa mata sun kasance marasa galihu a cikin nasarar wannan darasi na makaranta mai daraja. Duk da haka shekaru 18 bayan haka, wannan binciken bai sake samun wani bambanci tsakanin samari da 'yan mata ba. Me ya faru ? Shin kwayar halittar 'yan mata za ta iya haɓaka cikin ɗan gajeren lokaci? Babu shakka, a'a. Ƙungiyar bincike ta 1990 babu shakka ta ƙimanta mahimmancin kwayoyin halitta kuma sun manta cewa ɗan adam shine farkon abin da ya samo asali daga tarihin al'adu da zamantakewa. Nazarin¹³ tun daga shekarar 2008 ya sami nasarar nuna mahimmancin waɗannan abubuwan muhalli. Masu binciken wannan aikin sun lura cewa an danganta gibin da ake samu a fannin lissafi tsakanin jinsi… da ma'aunin 'yancin mata! Don haka, a cikin Norway da Sweden, inda alamar ta kasance mafi girma, gibin aikin shine mafi ƙasƙanci. Ga Turkiyya, akasin haka ne! Don haka gibin aikin a lissafi zai zama aikin al'adun daidaikun ƙasashe.

Game da halaye? Shin su ma al'umman mu suna da sharaɗi? Shin mata sun fi tausaya? Shin ta “dabi’a” ce?