SchaferAutismReport: EEG Test To Identify Autism In Children

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RESEARCH

EEG Test To Identify Autism In Children

Brain Activity Captured In

Diagnostic Test

By Andy Coghlan newscientist.com

Characteristic

patterns of electrical brain activity seen in children with autism

could provide a new test for diagnosing the condition.

At present, autism is diagnosed by

carefully observing a child's behaviour and assessing their clinical

history. Now, Duffy of Boston Children's Hospital and colleague

Heidelise Als have developed an electroencephalogram (EEG) test that

involves placing 24 electrodes on a child's scalp.

This enabled them to identify 33

patterns of connectivity between brain regions that were strikingly and

consistently different in 430 children with autism aged between 2 and

12, compared with 554 neurotypical controls.

"I'm very optimistic this data will

provide a potential for early diagnosis," Duffy says.

The researchers analysed patterns of

connectivity for all possible pairings of the 24 electrodes, amounting

to more than 4000 in total. Duffy calls the patterns "coherence

factors" because they are a measure of how well signals from different

brain regions match up with each other. This reflects the strength of

the connectivity between the regions from which the signals originated.

A key feature of autism is thought to be

poor connectivity between brain regions linked with language. And as

expected, the greatest differences between neurotypical and autistic

children were in a pattern, called factor 15, which showed very poor

connectivity in a part of the brain vital for language processing

called the arcuate fasciculus.

The differences between children with

autism and the controls were marked in all age groups analysed, raising

the prospect of diagnosing autism early on, when treatment is likely to

be most

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RESEARCH

EEG Test To Identify Autism In Children

Autism Awareness: Scanning Siblings' Brains

Antioxidant Shows Promise As Autism Treatment

Gene Expression Profiles of Inflamed Bowel Biopsy Tissue in ASD

Children Are Consistent with Inflammatory Bowel Disease

Autistic Boys Sought For Oxytocin Study

Utah study: Expanded Definition Finds More Disabled Kids With Autism

Probing the Roots Of Depression By Tracking Serotonin Regulation At A

New Level

NEWS

Critics Laud Progress, But Say Nova Scotia's Autism Plan Neglects

Adults

NJ's Montclair State Makes Play For Autism Research

Theft of Electronics Hits Autistic Center Hard

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