
© Richard Watts, PhD, University of Vermont and Fair Neuroimaging Lab, Oregon Health and Science UniversityfMRI image of preteen brain while child performs a working memory task, released by ABCD researchers. The regions in yellow and red are most active.
A groundbreaking, $300 million study has discovered that children who spend at least seven hours a day on smartphones or tablets are changing the structure of their brains.
The new research was funded by the
National Institute of Health, a government agency, showing the results of technology on children.
Researchers made their finding by scanning the brains of 4,500 children, and scientists are in the process of following more than 11,000 9-year-olds and 10-year-olds over the course of about a decade. The first bit of data has revealed that too much screen time might have an adverse effect on children.
"Scientists can look at brain characteristics associated with impulsive action or early psychopathology; the impact of health behaviors (e.g., sleep, physical activity) on cognitive and brain development; or traits associated with media use, including screen time exposure. For example, a recent study (link is external) by ABCD investigators showed associations between differing amounts and kinds of screen time (e.g., video games vs. social media) and different structural brain characteristics, psychological traits, and cognitive function," reads an abstract from the National Institute of Health.
"Scientists will be able to follow participants over time to understand how media use will influence a person's development, underscoring the unique opportunity provided by the ABCD study," it said.
Namely, scientists discovered that daily screen usage showed that children
had premature thinning of the brain cortex, which is the outermost layer that processes information. Those who have less screen usage showed a difference than those who did, but NIH study director, Gaya Dowling, cautioned against making a conclusion yet.
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