Researcher calls for changes to auditory environment for preemies in neonatal care centers

February 15, 2016 by Bob Yirka report
baby, infant, newborn
Image: Wikimedia Commons

(Medical Xpress)—Amir Lahav, an Assistant Professor of Pediatrics at Harvard Medical School, gave a presentation at this year's meeting of the American Association for the Advancement of Science recently, outlining what he described as premature babies being put into 'dungeon' incubators as they mature in hospital intensive care units—he believes the experience leads to learning disabilities for such children.

Lahav described experiments he and his colleagues have carried out where mothers of were asked to submit to recordings and then to allow for speakers to be placed inside of incubators to play those recordings to mimic the sounds (voice, heartbeat, etc.) a fetus would have heard had he or she been still inside the uterus up till the time they would have been born at term. Lahav reported that those babies had a larger auditory cortex at discharge than other preemies that were not exposed to the recordings and that they weighed more—they also more clearly responded to auditory cues, particularly from women.

The current common practice, he explained, is to place in an incubator that not only keeps them warm, but protects them against infections and other ailments, which is good. The problem come about when the preemie is put into an environment that ignores the growing brain—the brain during that time is developing very fast, he notes, and one of the things it is learning about is sound processing. In the absence of a steady heart beat, or the sound of a mother talking, or singing, or the myriad other noises that a fetus still inside the womb would naturally hear during a pregnancy, the brain doesn't have a chance to grow in a way that allows it to learn how to process such sounds. The result, he notes, is an increased rate of learning disabilities for babies born prematurely, particularly in auditory areas.

Lahav points out the stark contrast between the warm and safe womb atmosphere, and the sterile environment inside of an incubator where a preemie will hear nothing but the whir of a fan for hours on end, or on occasion, muffled voices from doctors or nurses. That needs to change, he concludes.

Explore further: Mom's voice may improve the health of premature babies

More information: Hospital Noise and Babies' Brains: Evidence from Premature Newborns,

Related Stories

Mom's voice may improve the health of premature babies

March 8, 2012

When babies are born prematurely, they are thrust into a hospital environment that while highly successful at saving their lives, is not exactly the same as the mother's womb where ideal development occurs. The Neonatal Intensive ...

Recommended for you

Does the moon affect our mood or actions?

May 6, 2016

Always surrounded by an aura of mystery, the moon and its possible influence over human behavior has been object of ancestral fascination and mythical speculation for centuries. While the full moon cannot turn people into ...

Youth dance classes score low in physical activity

May 18, 2015

For parents who send their kids to dance classes to get some exercise, a new study from researchers at University of California, San Diego School of Medicine suggests most youth dance classes provide only limited amounts ...


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.