Muaj tseeb tiag ntau dua ib zaug koj tau xav tias dev pom, txoj cai? Lub dogs 'view feem ntau ua rau muaj kev xav paub ntau ntawm cov neeg saib xyuas dev. Yav tas los nws tau ntseeg tias dev tsuas pom dub thiab dawb xwb, txawm li cas los xij, cov kev tshawb fawb tsis ntev los no qhia tias dev muaj color vision, txawm hais tias nws yuav tsum tau muab sau tseg tias nws muaj tsawg dua. tshaj qhov peb tib neeg muaj [1]
Apart from banishing cuav myths, in this article peb yuav daws tau ntau yam kev tsis ntseeg txog dog pom kev, piav qhia lawv pom dev Thaum tsaus ntuj, cov dev pom cov xim li cas los yog dab tsi cuam tshuam rau tus dev qhov kev pom, los ntawm puppyhood mus rau cov neeg laus.
Thov teb tag nrho cov lus nug no, peb tau tsim cov ntawv tshaj tawm no rau ntawm peb lub xaib, raws li kev tshawb fawb tshawb fawb, uas hais txog qhov teeb meem no kom ntxaws, los pab koj nkag siab zoo dua lawv ua li cas saib cov dev, xim, lub peev xwm lawv muaj thiab lwm yam xav paub, xws li kev hloov pauv ntawm lawv lub zeem muag. Nyeem ntxiv!
Thaum twg dev pib pom?
Koj puas tau xav tsis thoob cov menyuam dev pom li cas? Tus aub yog ib tug altricial species, ib lo lus zoological siv los xaiv cov menyuam dev uas yug los tsis pom kev thiab tsis muaj plaub hau, uas tseem vam khom rau lawv niam lawv txiv kom ua tiav[1]
Tus aub, ua ib tug menyuam dev, yug los dig muag thiab yog nyob ntawm nws niam, uas yuav ua kom txhua yam kev saib xyuas tsim nyog rau nws kom loj hlob mus txog thaum nws muaj peev xwm noj tau thiab muaj sia nyob ntawm nws tus kheej. Nws nyob ib ncig ntawm 3 lub lis piam thaum nws pib qhib qhov muag pom.
Tom qab ntawd, nyob ib ncig ntawm tsib lub lis piam ntawm lub hnub nyoog, tus menyuam dev tau tsim lub zeem muag tag nrho. Nws suav hais tias ntawm tsib mus rau xya lub lim tiam ntawm lub neej peb tuaj yeem pib cob qhia tus menyuam dev, vim nws twb muaj kev ywj pheej ntau dua los ntawm leej niam thiab feem ntau ntawm nws cov kev xav tau tsim.
Tsis txhob hnov qab qhia nws nyob rau hauv ib qho chaw uas muaj ob peb stimuli, vim li no tus dev yuav tsis cuam tshuam thiab yuav kawm tau sai dua. Ntawm 3 hlis, tus menyuam dev twb zoo li tus dev laus.
Dab xim dab tsi pom?
Nkauj ntseeg tau tias dev pom dub thiab dawb. Dab tsi yog qhov tseeb hauv nws? Qhov tseeb yog tias dev tsis pom xim ib yam li peb tib neeg, tab sis qhov kev thov tias lawv pom dub thiab dawb yog ib qho ntawm 10 feem ntau cov dab neeg hais txog dev. Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tau taw qhia tias dev tsis pom dub thiab dawb, lawv pom xim.
Dab pom xim li cas?
Cov cones, cov hlwb ntawm lub retina ntawm lub qhov muag, tso cai rau tus dev mus perceive txawv ximua tsaug rau lub teeb [2] Thaum tib neeg muaj qhov rhiab heev rau peb cov xim sib txawv: liab, xiav thiab ntsuab (trichromatic vision), dev tsuas rhiab rau ob xim: xiav thiab daj , uas yog, lawv muaj dichromatic tsis pom kev[4][5
Nyob rau ntawm peb lub xaib peb twb qhia rau nej paub tias yog dab tsi xim uas dev pom raws li ntau yam kev tshawb fawb, qhov twg koj yuav xav tsis thoob kom pom tias lawv tsis tuaj yeem sib txawv liab los ntawm ntsuab, nrog rau ntau lwm yam kev xav ntawm canine tsis pom kev thiab xim.
Yog li cas dev thiaj pom tiag? Ntawm no yog ib daim duab edited nrog ib tug piv txwv aub saib yog li koj thiaj tau pom lawv lub zeem muag zoo li no:
Dab pom hauv qhov tsaus ntuj li cas?
Tau kawg! Aub pom qhov tsaus ntuj thiab qhov no yog ib qho tseem ceeb tshaj plaws uas lawv muaj, uas yog vim li cas lawv kuj zoo kawg thiab suab nkauj nocturnal Qhov tseeb, kev xaav ntawm kev txav mus ua ke nrog qhov sib txawv ntawm lub teeb zoo li yog lub hauv paus ntawm kev pom ntawm canine[6]
Tus dev cov tub kawm ntawv muaj peev xwm nthuav dav thiab qhov no txhais tau hais tias qhov dimmer lub teeb, qhov stimulation ntau dua qhov retina tau txais. Nyob rau hauv lub retina peb pom cov hlwb reflecting uas tsim ib txheej ntawm cov ntaub so ntswg hu ua tapetum lucidum, yam ntxwv ntawm nocturnal mammals. Tej zaum koj tau xav tsis thoob vim li cas tus dev lub qhov muag ci hauv qhov tsaus ntuj, nws yog qhov tseeb vim yog cov ntaub npog no. Peb tib neeg tsis muaj nws. Tau kawg, nyob rau hauv qhov tsaus ntuj tag nrho tus dev yuav tsis pom ib yam dab tsi, vim xav tau ib lub teeb, txawm li cas los xij yog tias nws dim nws yuav txaus los txhawb cov hlwb..
Tus dev puas pom zoo los ntawm qhov deb?
Tus aub muaj peev xwm Dab tsi txog 6 meters deb, tsis zoo li tus neeg, leej twg tuaj yeem ncav cuag 25 meters. Qhov kev muaj peev xwm no tseem ceeb nyob ntawm lub cornea thiab lub lens, thiab nws yog lub lens ntawm tus dev nws tus kheej, raws li nws tshwm sim nrog tib neeg, tuaj yeem zoo dua lossis phem dua.
Qee tus dev raug kev txom nyem myopia thiab lwm tus hyperopia. Piv txwv li, Labrador Retriever yog ib qho ntawm cov tsiaj uas paub tias muaj qhov muag pom tau zoo, thaum German Shepherd lossis Rottweiler nyiam raug mob myopia.
Dab qhov muag zoo li cas?
Nws tsis yooj yim kom paub tias dev pom lawv tus tswv. Lawv siv sijhawm ntau hnub saib lub ntiaj teb nyob ib puag ncig lawv thiab pom lawv tsev neeg hlub. Nws lub zeem muag txawv heev li peb tus dev tsis pom ib yam li peb pom.
Dab lub zeem muag thiab kev pom lub ntiaj teb nyob ntawm ntau yam:
- Muaj peev xwm ntsuas qhov deb (teb ntawm kev pom thiab qhov tob tob): txoj hauj lwm ntawm lub qhov muag ntawm tus tsiaj lub taub hau txiav txim siab qhov muag peripheral thiab tus nqi ntawm qhov muag pom koj tuaj yeem pom nrog ob lub qhov muag. Nws yog lub npe hu ua binocular vision. Qhov no tso cai rau koj pom qhov tob thiab ntsuas qhov deb. Lub zeem muag ntawm cov dev yog 240º, thaum peb qhov yog 200º. Hauv qhov sib piv, lub zeem muag ntawm lub ntsej muag ntawm tib neeg yog qhov zoo tshaj ntawm tus dev.
- Ability to focus on objects (Visual acuity): Qhov peev xwm no tso cai rau koj tsom mus rau cov khoom sib txawv thiab sib txawv ntawm ib qho. Lub cornea thiab lo ntsiab muag yog lub luag haujlwm tseem ceeb rau lub peev xwm no.
- Motion Perception: dev muaj qhov muag pom kev zoo heev. Tseem muaj cov kev tshawb fawb qhia tias lawv tuaj yeem ntes cov khoom txav mus los lossis tsiaj mus txog 800 meters.
- Color Differentiation: cov cones yog cov hlwb pom nyob rau hauv lub retina, uas txiav txim qhov kev xaav ntawm cov xim, tsuav yog lawv txhawb los ntawm lub teeb ntawm txawv wavelengths.
Dab saib TV?
Tsis zoo li tib neeg, dev tsis cuam tshuam nrog ib puag ncig siv tsuas yog kev tswj hwm thiab kev pom, lawv xav kom siv lawv qhov hnov tsw kom tau xov xwm xov xwm.[3]Vim li no, muaj ntau tus tswv xav tias dev saib TV, zoo, qhov tseeb yog dev tsis nyiam saib movie lossis xov tooj ntawm tes, vim lub hertz (Hz) zaus yog yoog rau tib neeg lub zeem muag, tsis pom kev pom.
Tam sim no, thiab ua ib qho cuab yeej ntxiv rau qee qhov teeb meem kev coj cwj pwm, xws li kev ntxhov siab, TV channel tau tsim tshwj xeeb rau cov dev, zoo li yog DogTv.
Nkauj ntseeg tawm tshiab
Tom ntej no, peb yuav los tshuaj xyuas qee qhov xav paub txog dog lub zeem muag:
- Tus dev tsis tuaj yeem pom ntau tshaj li ib nrab metres saum av, thiab qee qhov me me me tuaj yeem pom ob peb centimeters. Piv txwv li, ib tug Pekingese muaj qhov pom luv luv dua li Newfoundland.
- Lwm qhov tseeb yog qhov tus aub qhov pom kev nco tsis zoo li peb, nws nyiam nco los ntawm kev hnov lus thiab tsw.
- Vim li cas dev tsis saib lawv tus kheej hauv iav? Koj puas tau xav paub? Qhov tseeb yog tus aub tswj kom pom nws cov duab pom hauv daim iav, tab sis thawj ob peb zaug lawv tsis tuaj yeem paub txog lawv tus kheej, yog li lawv nyiam tua, khiav los yog tawv.
- Ntuj kuj nug yog tias dev pom dab. Nws yog ib qho nyuaj rau xav txog nws yog tias peb saib tus aub ntsia rau hauv qhov chaw lossis barking ntawm "tsis muaj dab tsi". Yog li ntawd, ntau tus neeg xav paub seb lawv cov dev muaj peev xwm ua tau dab tsi thiab yog tias muaj tseeb tias dev pom dab. Peb yeej tsis paub tiag.
Cov peev xwm tsis txaus ntseeg ntawm cov dev feem ntau yog vim lawv qhov kev hnov tsw tsw ntxhiab, uas tseem tso cai rau lawv kom pom cov neeg muaj sia nyob hauv qhov xwm txheej loj. Tus dev lub zeem muag sib txawv ntawm peb tus kheej, tab sis nws yog
Koj puas tau xav ntau dua? Tej zaum koj yuav xav paub seb cov nees pom li cas lossis miv pom li cas, nrhiav txhua yam ntaub ntawv ntawm peb lub xaib!
