Masana Sun Yi Taswirar Yadda Kwayoyin Ƙwaƙwalwa Ke Sarrafa Kamshi a Binciken Da Ya Ban Mamaki
A karo na farko a tarihin bil'adama, masu bincike sun sami nasarar rikodin aikin ƙwayoyin kwakwalwa guda ɗaya a cikin mutane masu farkawa yayin da suke sarrafa kamshoshi daban‑daban, inda suka bayyana sirrin ɗaya daga cikin mafi ɓoyayyun halayen mu. Wannan bincike, da aka wallafa a mujallar Nature, ya cike gibi da shekaru da dama tsakanin nazarin dabbobi da fahimtar kamshin ɗan adam.
Sabbin Hanyoyin Rikodi Masu Ceton Suna Bayyana Sirrin Hanyoyin Ƙwaƙwalwar Kamshi
Ƙungiyar bincike, da University Hospital Bonn ke jagoranta, ta yi amfani da fasahohi masu ci gaba don sa ido kan aikin ƙwayoyin ɗaya‑ɗaya a piriform cortex da medial temporal lobe na masu halarta masu farkawa. Yayin da masu gwaji ke tantance kamshi, masu bincike sun kama yanayin wutar lantarki a ainihin lokacin a sassan kwakwalwa da suka haɗa da piriform cortex, amygdala, entorhinal cortex, da hippocampus.
Abin da suka gano shi ne wani taron ƙwayoyin da ke rawa kamar kida, inda sassa daban‑daban na kwakwalwa ke taka rawa wajen sarrafa kamshi. Kwayoyin da ke cikin piriform cortex su ne suka fi ƙarfi wajen wakiltar asalin sinadarin kamshi – kamar su ne “alamar kamshi” ta asali a kwakwalwar mu. A gefe guda, ƙwayoyin hippocampus suna nuna yadda mutum ke riƙe da kamshi da yadda zai iya gane kamshi na musamman a nan gaba.
Fiye da Gano Kamshi Kawai: Haɗin Gwiwar Hanyoyin Ji Na Hudu
Abin da ya fi ba da mamaki shi ne cewa sarrafa kamshi a kwakwalwar ɗan adam ya wuce gano kamshi kai tsaye. Ƙwayoyin piriform cortex ba su amsa ga kamshi kawai ba, har ma ga hotunan da suka danganci kamshi, alamar wani tsarin haɗa hoto da ƙamshi.
Amygdala ta nuna halayen da suka fi jan hankali – ƙwayoyinta na kodawa ƙimar motsin zuciya ga kamshi, ko da kamshin ya zama mai daɗi ko mara daɗi. Wannan tsarin yana taimakawa wajen bayyana dalilin da ya sa wasu kamshi ke haifar da ƙarfi mai tasiri a tunani da tunawa.
Tasirin Ga Fahimtar Halayen Dan Adam
Binciken ya kuma nuna cewa maimaita buɗewa ga kamshi guda yana sa ƙwayoyin su rage ƙarar wutar lantarki, alamar “central repetition suppression”, wato samun saba wa kamshi a matakin ƙwaya ɗaya. Wannan na bayyana me yasa muke jin daɗi da ƙamshi mai ɗorewa kamar ƙamshin kofi a ɗakin girki ko turaren da muka saba da shi a gida.
Wani abin da ya fi ba da mamaki shi ne gano ƙwayoyin da ke amsa ga ma’ana da hoton da ke da alaƙa da kamshi – waɗanda ake kira “concept cells” ko “kwayoyin ra'ayi”. Sakamakon ya nuna cewa kamshin ɗan adam ba wai kawai tsarin gano sinadarai ba ne, har ma wani tsari ne mai ƙarfi na haɗa ji da ma’anoni masu zurfi.
Wannan bincike mai ban mamaki yana buɗe sabbin hanyoyi don fahimtar cututtukan da suka shafi ji, ƙirƙirar magunguna ga matsalolin kamshi, da kuma ƙara fahimtar yadda kwakwalwar ɗan adam ke gina ƙwarewar mu na ji a duniya.
