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Brain imaging shows how nonverbal children with autism have slower response to sounds

Press releases may be edited for formatting or style | September 20, 2019 MRI
Philadelphia, September 18, 2019 - Even though nonverbal or minimally verbal people who have autism spectrum disorder (ASD) make up between 25 and 30 percent of the total autistic population, almost no studies have been done focusing on this group and their particular needs.

To address this gap in knowledge of the true spectrum of autism, researchers at Children's Hospital of Philadelphia (CHOP)'s Intellectual and Developmental Disabilities Research Center used state-of-the-art brain imaging techniques to determine how this specific group of children who have autism processes auditory stimuli, which could have important diagnostic and prognostic implications across the autism spectrum. The findings were published in the journal Molecular Autism.

Previous brain imaging studies have found that children on the autism spectrum have prolonged or delayed auditory processing responses compared with their neurotypical peers. However, most imaging studies have focused on verbal children with autism. Children with limited or no speech have previously been excluded because they are more likely to have difficulty understanding the demands and requirements of the imaging process and are less likely to tolerate loud noises or other sensory experiences related to imaging techniques such as magnetic resonance imaging (MRI).
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In order to bridge this gap in understanding and to help answer questions about nonverbal or minimally verbal children with autism, CHOP scientists utilized a magnetoencephalography (MEG) technology, which allowed them to measure magnetic fields produced by electrical activity in the brain. This technology has previously been used to study brain signatures associated with autism.

With the support and input from parents and providers from the community, the study team developed the MEG Protocol for Low Language/Cognitive Ability (MEG-PLAN) specifically designed for this group of patients and for use with MEG technology. The interdisciplinary research team partners with families to implement MEG-PLAN.

"By using this plan, we're able to provide families with materials that help familiarize them with the entire research visit process," said Emily Kuschner, PhD, a licensed clinical psychologist and scientist at in the Lurie Family Foundations Magnetoencephalography (MEG) Center and the Center for Autism Research at CHOP. "For example, if a child has sensory sensitivities, they might be given scrubs to take home so they can get used to how they feel, or we might provide them with the adhesives used to attach the sensors to the face to desensitize a child to the experience."

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