Karfin basirar aku da hankaka ya fi na biri

Mataki na ashirin da "Mafi wayo aku" mun yi nazarin nau'o'in nau'o'in tsuntsaye masu ban mamaki da yawa kuma muka yanke shawarar cewa ba a yi cikakken nazarin basirar tsuntsaye ba, tun da har yanzu tsuntsaye suna ba mu mamaki da halinsu da kuma iya fahimtar tashi.

Duk da cewa tsuntsaye kusan sun kai girman goro, kuma kwakwalwarsu ta kai girman goro, an dade da tabbatar da cewa tsuntsayen ba su da wani ci gaban kwakwalwa kamar yadda dabbobi ke yi. Amma wannan baya hana manyan aku da ɗimbin ɓangarorin kai hari ga bil'adama da iyawarsu ta hankali.

Amsar ta kasance a cikin yawa na neurons. An bayyana hakan a cikin fitowar mujallar Abubuwan da aka gabatar na Cibiyar Nazarin Kimiyya ta Ƙasa ta Amurka.

Tawagar masana kimiyya daga jami'ar Vanderbilt, tare da takwarorinsu na jami'ar Charles da ke Prague da kuma masu bincike daga jami'ar Vienna, karkashin jagorancin Susanne Herculano-Hosel da Pavel Nemech, sun yi nazari kan adadin kwayoyin neurons a cikin kwakwalwar samfurori na nau'in tsuntsaye 28 da kuma kwatanta. yana haifar da adadin neurons a cikin kwakwalwar dabbobi. An gano cewa a cikin kwakwalwar tsuntsaye masu rairayi da kuma aku, yawan ƙwayoyin neurons ya ninka na primates sau biyu, kuma idan aka kwatanta da rodents, to 4!

Samfurori na kwakwalwa an ɗauki girman girman iri ɗaya ta hanyar rabuwar jiki, ƙidayar jimlar adadin ƙwayoyin da aka dakatar daga nama mai juyayi.

Masu binciken sun iya tabbatar da cewa tare da cortex mai nauyin gram 14,4 a cikin macaw, adadin neurons shine biliyan 1,9, yayin da a cikin macaques, mai nauyin kwakwalwa na 69,8, biliyan 1,7 kawai.

Irin wannan adadi mai yawa na neurons a cikin ƙaramin ƙara ya haifar da tsari mai yawa. Girman ƙwayoyin jijiya na tsuntsaye ya fi ƙanƙanta fiye da na dabbobi masu shayarwa, matakai sun fi guntu, kuma synapses sun fi dacewa. Wannan shine abin da ke bawa tsuntsaye damar haɗa mafi ƙarancin nauyi don sauƙi na tashi tare da ƙwarewar fahimta mai ban mamaki wanda ya wuce na rodents da ƙananan primates.