Powered by Guardian.co.ukQhov tsab xov xwm hu ua “Lub tiab quandary: 'Nws yog ib qho illusion. Tab sis txhua yam yog ib qho illusion '” yog sau los ntawm Jessica Glenza nyob rau hauv New York, rau theguardian.com rau hnub Friday 27th Lub ob hlis ntuj 2015 22.41 UTC

Nws yog ib tug tsawg feat rau ib tug meme nkag tawm ntawm lub muck ntawm internet kab lis kev cai thiab mus rau hauv lub nco ntsoov ntawm txhua hnub folks. Tshwj xeeb tshaj yog thaum nws tshwm sim sai li "lub tiab" ua.

Nruab nrab ntawm Thursday yav tsaus ntuj thiab thaum sawv ntxov hnub Friday, lub tiab loj hlob los ntawm ib tug Tumblr post los ntawm ib tug Irish tshuab raj mus rau ib qho thoob ntiaj teb tshwm sim thiab kawm ntawm sib cav tswv yim thoob plaws lub ntiaj teb.

Lub crux ntawm lub tiab lo lus nug, thiab tej zaum nws tsis txaus siab, yog yooj yim: yog tus frock dawb thiab kub, los yog xiav thiab dub?

Lub phenomenon yuav lub txiaj ntsim ntawm ib tug yooj yim kho qhov muag illusion, ib tug ambiguity, los yog nws yuav yog ib tug ntau ua. Txawm tus ua, nws yog ib tug yees duab uas tsis txawm xaav soj ntsuam yuav pom zoo rau.

"Yog li ntawd ntau npaum li cas ntawm peb lub zeem muag thiab lub rooj sib hais yog tiag tiag muaj tseeb,"Hais tias Howard C Hughes, uas investigates lub mechanisms ntawm xaav ntawm Dartmouth College lub department ntawm lub hlwb thiab lub hlwb sciences. "Yog hais tias tsis yog li ntawd, peb yuav tsis taug kev los ntawm lub qhov rooj, thiab peb yeej yuav tsis khiav 50 mev thiab ntes ib tug yoov pob nyob rau hauv qhov chaw teb. "

Nyob rau hauv luv luv, koj tsis vwm: feem ntau ntawm dab tsi koj pom yog dab tsi lwm tus neeg saib. Tab sis Hughes rau peb nco qab hais tias cov khoom peb "saib" tsis tau muaj lub hauv paus zoo peb tau perceive, tshwj xeeb tshaj yog thaum peb nyob nraum ua hauj lwm nrog luag cov lus qhia, xws li ib tug grainy, ob-seem yees duab.

Cov dluab yog chewed li cov ntaub ntawv sau los ntawm peb lub qhov muag thiab reassembled los ntawm peb lub paj hlwb, tsim los ntawm txoj kev lom thiab puas hawv dab.

"Qhov ntawd tsim, Kuv xav tias, qhov kev xav uas … peb cia li saib yog dab tsi tawm muaj,"Nws hais. "Tiam sis peb yuav tsum tsim tias - lub hlwb muaj tsim tias - thiab cov neeg muaj kom paub nyob rau hauv ib tug tsis tseem ceeb txoj kev koj xav tau ob lub qhov muag mus saib, tab sis koj xav tau ib tug lub hlwb mus rau perceive, thiab yog li ntawd xaav yog ib yam dab tsi uas yog muab tau los. "

Lub tiab quandary tsom rua xim, ib tug xaav hais tias tsis yog "tiag tiag" ib se. Cov kev ntawm cov xim yog lub xaav ntawm qhov ntev ntawm lub lub teeb pom rays reflected los ntawm ib tug saum npoo, txhais raws li ib tug ntawm peb thawj cov xim los ntawm tus tib neeg qhov muag.

Piv txwv li, dab tsi peb pom li "liab,"Tsis yog ib tug tseem ceeb zoo ntawm ib yam khoom. Es, nws yog tib neeg 'remarkably homogenous xaav ntawm tus cwj pwm li lub teeb. Thiab muaj kom txaus ntawm cov tsiaj uas muaj kev ntau xim npaum li cas txawv dua li tib neeg. Lub eyeballs ntawm ntsuas cw, piv txwv li, muaj 12 xim receptors piv rau tib neeg 'peb.

Thiab thaum lub sij hawm rau lo lus nug tej zaum yuav zoo li inconsequential, ntau tau pom hais tias cov duab ua hauj lwm pab raws li ib tug fascinating piv txwv ntawm cov interplay ntawm tib neeg biology thiab xaav - constructs hais tias ua li ib co ntawm cov feem ntau kawm teb ntawm lub hlwb science.

"Muaj tsis muaj yog vim li cas xav tias tag nrho cov kev nthuav dav ntawm lub zoo kawg txoj kev uas tsis muaj leej twg tiag tiag, siab to taub tsis muaj ib tug neeg sib txawv,"Hais tias Hughes. "Tam sim no, yuav ua li cas cov duab no tau ua li ib tug amazing txoj hauj lwm uas ua tau uas painfully cuab - Kuv tsis paub tseeb. Tab sis kuv xav hais tias yog vim li cas nws tsim npaum li ntawd thaum tshav kub kub ntawm cov neeg yog feem ntau ntawm peb xav tias peb cia li saib yog dab tsi tawm muaj. "

Hughes hais tias qhov kev kawm yuav tsum raug mus rau ntau cov kev tshawb fawb, thiab hypothesized tias cov xiav-dawb phenomenon yuav lub txiaj ntsim ntawm ib yam dab tsi los ntawm anomalous trichromats (cov neeg uas muaj me ntsis txawv to taub cov thawj cov xim) mus rau ib tug (nyuaj heev) reversing optical illusion, tej zaum hu ua ib tug ambiguity.

Tus neeg twg uas tau sim mus rov qab rau orientation ntawm convex thiab concave voj voog, los yog ib tug spinning silhouette yuav muaj ib lub tswv yim yuav ua li cas nyuaj ib co xws dluab yog tau ntxeev, los yog "disambiguate".

Lwm xaav soj ntsuam. Robert Fendrich, hais Hughes nws pom daim tiab li kub-dawb rau hnub Thursday tsaus ntuj, thiab xiav-dub rau hnub Friday thaum sawv ntxov, yog ib tus uas zoo li yuav ib tug neeg tsawg ntawm cov neeg muaj peev xwm reorient daim duab. Fendrich yog ib tug mus xyuas tus kawm siab ntawm Dartmouth College, kuj nyob rau hauv lub hlwb thiab lub hlwb sciences department.

Nyob rau ntawm lub Whitney Kuaj rau Xaav thiab Action ntawm University of California Berkeley, David Whitney hais tias daim duab tus nyhuv yog yooj yim - nws yog ib qho ambiguity ntawm inference.

"Koj infer lub teeb yog tsoo lub tiab ncaj qha, thiab kuv infer hais tias lub teeb yog los ntawm qab lub tiab,"Hais tias Whitney. "Nws boils down mus rau ib tug tiag tiag yooj yim sib txawv, thiab nws yog ib tug yooj yim heev ambiguity. "

"Nws yog ib qho illusion,"Hais tias Whitney. "Tab sis txhua yam yog ib qho illusion."

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