Me yasa muke sa idanu?
A matsayinmu na yara, yawancinmu na da kishi da 'yan uwanmu ko abokai. Har yaushe za ku iya ɗaukar wannan kallon ba tare da yin hankali ba? Idanunku sun fara konewa da ruwa kuma a karshe kuka bar.
Tsinkayawa shine aiki mai sauri na rufewa da kuma bude fatar ido. Yin gyare-gyare yana da muhimmanci saboda yana cire ƙurar ƙurar da kuma saɗa ido.
Matsakaicin matsakaici yana daukan kimanin gilashi 400, amma saurin zai iya shafar abubuwa da dama irin su gajiya, amfani da magani, da wasu yanayin kiwon lafiya. Kodayake tabbas ba ku lura da shi ba, mutum mai matsakaicin mutum yana zamewa kusan kowane lokaci a cikin 10 seconds. Kwallon kwakwalwar mutum shine iya watsi da duhu mai duhu, yana ba mu damar samun ra'ayi na gaba game da duniya.
Kamar yadda aka ambata a sama, ainihin dalili da idanunmu ke gani shine a shafe kuma sake sake sabon fim dinmu. Mu hawan fim yana ainihin rikitarwa kuma an sanya shi fiye da ruwa. An yi hawaye da yawa daga ruwa, man fetur da ƙulla. Har ila yau, akwai daruruwan wasu abubuwan da aka gyara kamar su lysosomes waɗanda suke aiki kamar kwayoyin maganin rigakafi. Har ila yau, akwai wasu abubuwan gina jiki da amino acid wanda zasu taimaka wajen magance kwayoyin halitta a cikin layinin abin da ke ciki, mai tsabta, kamar yadda yake a gaban ido.
Bayan ajiye idanuwanmu lubricated, mu hawaye fim kuma:
- yana taimakawa wajen samar da wani abu mai kyau, mai sassaucin ra'ayi a saman tamanin don haske don mayar da hankali sosai
- yana taimakawa wajen sauya oxygen daga yanayin zuwa caine , saboda babu jini don yada shi tsaye
- ya hana kamuwa da cuta saboda kasancewar lysozyme da sauran enzymes antibacterial
- ya wanke tarkace
- bayar da hanya don jinin jini lokacin da akwai rauni ga farfajiya
Akwai hanyoyi masu yawa a cikin fatar ido. Lokacin da idanu ta yi hankali, akwai nau'in shinge wanda ke nuna wadannan ƙuƙwalwa don ɓoye kayan hawaye. Har ila yau, akwai wani ƙananan kwalliya na fatar ido wanda ke motsa tarkace zuwa ga ma'auni , mai tsabtace ruwan motsi.
Sabili da haka, lubrication alama ce babban dalilin da muke gani. Duk da haka, masana kimiyya sun gano wasu dalilan da yasa zamu iya yin haske kamar sau da yawa. Masanin kimiyya ya bayyana cewa muna da hankali fiye da abin da ya cancanta kawai don sake sake waƙawar fim. Wani bincike wanda masanin kimiyya ya kammala a shekara ta 2012 ya nuna cewa zamu iya yin hankali don wasu dalilai.
Bayan nazarin binciken da yawa, masu bincike sun gano cewa ainihin lokutan da muke gani ba ainihin bazuwar ba. Sun sami ainihin cewa muna kallo a lokacin da za a iya gani. Alal misali, lokacin da ake karatun, yawancin mutane sun kulla a ƙarshen jumla. Lokacin da mutum yake sauraren jawabin, sai su yi hankali idan mai magana ya dakatar tsakanin maganganun. Wani misali shine lokacin da mutane ke kallon bidiyon, dukansu suna yin haske lokacin da aikin da ke bidiyo ya lakaba dan lokaci.
Yana samun rikice mai rikitarwa, amma masana kimiyya sun ji cewa muna amfani da ƙuƙwalwa a matsayin hanya don samun taƙaitaccen tunanin hutawa na tunanin tunani wanda zai hanzarta dakatar da hankalin gani don mu iya mayar da hankali ga abin da ke kusa.
Masanin kimiyya ya gano cewa lokacin da mutane suka kulla, halayyar tunanin mutum a wasu wurare a cikin kwakwalwa da ke aiki yayin da hankali yake cikin yanayin rashin natsuwa. Sun ji cewa kunnawa wannan ɓangare na kwakwalwa yana aiki ne a takaitacciyar ƙwaƙwalwar motsa jiki sa'an nan kuma ya yarda da hankali idan idanun sun buɗe.
Sauran sun nuna cewa munyi haske don wasu dalilai na dalilai. Ana buƙatar ƙarin bincike amma ana bayyane yake cewa yanayin halin mutum yana canzawa idan muka kalli kuma ba kawai don sake sabon fim dinmu ba.
Source: Tamaimi Nakano, Blink-related dan lokaci kunnawa na hanyar sadarwa ta hanyar sadarwa yayin duba bidiyo, PNAS, 702-706, da: 10.1073 / .1214804110, Disamba 2012