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Newborn infants learn while asleep; study may lead to later disability tests
Date:5/17/2010

GAINESVILLE, Fla. Sleeping newborns are better learners than thought, says a University of Florida researcher about a study that is the first of its type. The study could lead to identifying those at risk for developmental disorders such as autism and dyslexia.

"We found a basic form of learning in sleeping newborns, a type of learning that may not be seen in sleeping adults," said Dana Byrd, a research affiliate in psychology at UF who collaborated with a team of scientists.

The findings give valuable information about how it is that newborns are able to learn so quickly from the world, when they sleep for 16 to 18 hours a day, Byrd said. "Sleeping newborns are better learners, better 'data sponges' than we knew," she said.

In order to understand how newborns learn while in their most frequent state, Byrd and her colleagues tested the learning abilities of sleeping newborns by repeating tones that were followed by a gentle puff of air to the eyelids. After about 20 minutes, 24 of the 26 babies squeezed their eyelids together when the tone was sounded without the puff of air.

"This methodology opens up research areas into potentially detecting high risk populations, those who show abnormalities in the neural systems underlying this form of learning," she said. "These would include siblings of individuals with autism and siblings of those with dyslexia."

The research team's paper, published online this week in Proceedings of the National Academy of Sciences, describes the results of their experiment with the 1- or 2-day-old infants, comparing them with a control group using EEG and video recordings. The brain waves of the 24 infants were found to change, providing a neural measurement of memory updating.

"While past studies find this type of learning can occur in infants who are awake, this is the first study to document it in their most frequent state, while they are asleep," Byrd said. "Since newbor
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Contact: Dana Byrd
byrd@ufl.edu
352-339-5155
University of Florida
Source:Eurekalert

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