4D Scan Shows Fetus Yawning, A Sign That Could Help Identify Healthy Babies

Using 4D ultrasound scans that distinguish between yawning and simple mouth opening, researchers in the UK show that contrary to some views, fetuses do yawn, and suggest observing this behavior could be a useful way to monitor their developmental health. Lead researcher Nadja Reissland, from the Department of Psychology at Durham University, and colleagues, write about their findings in the 21 November issue of the open access online journal PLoS ONE...

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