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UNIVERSAL CITY, CALIF. -- Three-dimensional and four-dimensional ultrasound images may signal the birth of a new medical field of study: that of fetal behavior, Dr. Stuart Campbell predicted at a meeting of the Obstetrical and Gynecological Assembly of Southern California.
"We know more about the development of monkeys than we do about human fetal behavior," said the director of London's Centre for Reproduction and Advanced Technology.
In performing hundreds of 3D/4D ultrasounds, Dr. Campbell has encountered a few surprises himself. For example, there was the time a mother looked at the screen and commented that her fetus was blinking.
"The first time, I said, 'No, it's dark in there,'" he recalled. However, he then turned to see the fetus opening and then closing its eyes in a manner compatible with blinking. He demonstrated the behavior in a digital recording of such an examination.
Other recordings demonstrated fetal grimaces, grins, yawns, cries, grasps, finger play, and thumb sucking.
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