Ka taea e te taata kitea kotahi trillion kakara

Humans can detect one trillion smells
English: Nose diagram.

Ingarihi: hoahoa ihu. (nama Photo: Wikipedia)

Ka taea e te ihu te tangata te wehewehe i te iti rawa kotahi trillion kakara rerekē, mirioni neke atu i te tata i mua, ka mea a US kairangahau Rāpare.

No te tekau tau, whakaae pūtaiao e taea te taata kitea anake 10,000 kakara, maka ana i te tikanga o te hongi pai i raro i te kaha o te titiro me te whakarongo.

“E whakaatu ana to tatou tātaritanga e te kaha te tangata mō te ruarua kakara he nui nui atu i te tangata tūmanako, ka mea ako tahi-kaituhi Leslie Vosshall, upoko o University Rockefeller'S Laboratory o Neurogenetics me te Whanonga.

Te tata o mua mō kaha o te ihu — e kua kawea i roto i ki te awhina o 400 receptors olfactory — tuhia ki te 1920, me te kore i tautokona e te raraunga.

Kua tata kairangahau e te kanohi tangata, me ona mere toru receptors taea wehewehe e rave rahi miriona tae me e taea te taringa tātari 340,000 oro.

“hoki kakara, ka mau ake tangata te wa ki te whakamatautau,” ka mea a Vosshall.

Ki te whakahaere i to ratou rangahau, pūtaiao raro 26 kaiuru ki ranunga i hanga ki 128 rerekē rāpoi odorant e takitahi ai te marea e tarutaru, citrus ngā ranei matū, engari i ngā i roto i te whakarōpūtanga o runga ki 30.

“E kore matou i hinaaro ki a ratou kia āta mōhiotia, na ko te nuinga o to tatou ranunga tino tohe, me te tipua,” ka mea a Vosshall.

Kua kitea US kairangahau e te kakara te kaha tangata mō te ruarua he nui nui atu i te tangata tūmanako

“hiahia matou iwi ki te whakarongo ki 'konei te tenei mea tino matatini - Ka taea e te tiki ahau i tetahi atu mea matatini rite te rerekē?'”

e te whāwhā Volunteers toru oko o kakara i te wa — e rua i nga te tangata kotahi, me te e ko rerekē — ki te kite, ki te taea e kitea e ratou i ko te motumotu, whakaoti 264 taua faaauraa.

Ahakoa tūao’ aravihi rerekē nui, i runga i toharite ratou taea mohio te rerekētanga i waenganui i oko ki runga ki 51 ōrau o te taua wāhanga, ki iti tūao kimi i te rerekētanga i mua ngā te ranunga atu wae.

Na extrapolated kairangahau pehea maha kakara taea te tangata toharite kitea ki te ngā katoa taea o te 128 i tango odorants, haere mai ki to ratou tata o te iti rawa kotahi trillion.

kairangahau Lead Andreas Keller, hoki o University Rockefeller, ka mea He tata tino iti rawa te maha homai e reira e maha atu odorants e taea uru i roto i ara rave rahi i roto i te ao tūturu.

ka mea ia o tatou matua i okioki atu i runga i te tikanga o te hongi, engari e Refrigeration me te whanaketanga o te akuaku whaiaro kua iti kakara i roto i te ao hou.

“Tenei i taea e whakamārama to tatou huru e hongi he iti, whakaritea ki te rongo me te kite,” ka mea a Keller.

tapiritia ia e tūranga tika, i whakaarahia te taata’ he ihu o matara i te whenua te wahi maha emanate kakara, kia hoki kua whai wāhi.

Kei te āta hono te tikanga o te kakara ki te whanonga tangata, ka fakamamafa'i nga kairangahau e ako te reira i taea e whakaheke marama i runga i te pehea tukanga te roro tangata mōhiohio matatini.

whakaputaina te ako i roto i te Science hautaka.

Repost.Us – Anō tēnei Tuhinga
tenei tuhinga, Ka taea e te taata kitea kotahi trillion kakara: ako, kua tātahi i AFP ka whakairi te konei ki whakaaetanga. Copyright 2014 AFP. Rights katoa e waiho

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