What Do Babies See Before Birth?

What Do Babies See Before Birth? advertisement By: Alia Hoyt It might seem like fetuses aren’t up to much other than growing in the cozy, warm environment that is the mother’s womb. However, research published in the June 8, 2017 journal Current Biology showed that third-trimester babies have vision capabilities much more advanced than previously […]

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Wht Do Bbies See Before Birth?

By: Alia Hoyt

It might seem like fetuses ren’t up to much other thn growing in the cozy, environm tht is the mother’s womb. However, reserch publish in the June 8, 2017 journl Current Biology show tht third-trimester bbies hve vision cpbilities much more dvnc thn previously thought. nd they cn choose wht they wnt to look t.

It might seem like fetuses ren’t up to much other thn growing in the cozy, environm tht is the mother’s womb. However, reserch publish in the June 8, 2017 journl Current Biology show tht third-trimester bbies hve vision cpbilities much more dvnc thn previously thought. nd they cn choose wht they wnt to look t.

Reserchers from Lncster University in the Unit Kingdom were keen on expnding the understnding of fetl sight cpbilities. “We hve been ble to explore the use of ll the fetl senses except vision up until now,” ex led resercher nd professor of psychology Vincent Reid in n emil interview in 2017. “There is lot tht we know bout newborn bbies nd their vision, but lmost nothing with fetuses just before they re born. The newborn is very good t processing fces nd prefers to look t fces over ny other shpe so it ws logicl to explore the developm of this preference before birth.”

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totl of 39 fetuses were exmin (there would hve been more, but some of the bbies were in deep sleep becuse they miss the memo bout prticipting in reserch study, while others experienc poor imge qulity). They rng in gesttionl ge from 231 to 252 dys, nd were ll single births.

Obviously, since the fetl prticipnts were still cooking in their moms’ wombs, the reserchers resort to noninvsive ttempts to ssess their visul cpbilities. To do so, the sciists shone light through the mternl tissue. “The light consist of three dots,” Reid ex. “When these re rrng to repres two for the eyes nd one for the mouth, newborn bbies prefer to look t them more thn nything else. So we didn’t show fetuses ‘fce’ but n imge tht ws ‘fce-like.'”

The reserchers us 4-D ultrsound to mesure if nd how much the fetuses turn their heds in response to the stimuli. They lso show the sme three-dot pttern, but invert (so it didn’t resemble fce in structure) to the fetuses. s it turns out, non-fce-like dots were none too ppeling. “Turning it upside down mens tht newborns do not find it interesting,” Reid not.

lthough subtle, ttrction to the fce-like configurtion of three dots mkes big difference in wht we understnd bout developing sight. “It mens tht we hve this preference even before we re born,” Reid sid. “[It] is either due to being innte or due to experiences prior to birth.”

nother mjor finding of this reserch is tht it moves up the humn visul timeline. “We now know tht the fetus ctively engges with visul informtion in the [prentl] environm,” Reid sid. “The hed movem ws deliberte movem to trck the stimuli tht we pres. This mens tht we cn now look t mny other spects of fetl vision.”

Inde, the study hs lid the work for future delving into fetl vision, becuse s it stnds right now, little is known bout how much fetuses cn see. “Nobody hs look t this before,” Reid sid. “ week-old infnt hs very poor focl vision. It is ll blurr. The sme will be true for fetus few weeks before birth. We know tht premture infnts cn see shpes, lights, nd detils. But tht is once they re born, nd it could be tht the prentl environm is differ. We ne to find out.”

When we interview Reid he sid his next plnn to investigte whether fetuses could discriminte between quntities or numbers, which he not is something tht even newborns cn do. “If the fetus cn do this too, this tells us lot bout fetl cognitive cpcities,” he sid. “We’re lso keen to look t how the fetus sees motion. Bbies prefer to look t nimte or biologicl motion. If the fetus hs this preference, this would suggest tht experiences tht they hve hd engging with their own body my hve given rise to these preferences.”

Sight is the finl sense to develop inside the womb, with eyes stying clos until round gesttionl week 28. This is becuse fetl retins ren’t develop until tht point.

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