Skip to content

Brain & Nervous System Health Center

Font Size
A
A
A

Differences in Brains of Those With Dyslexia

Scans showed less connectivity in regions linked to reading

WebMD News from HealthDay

By Robert Preidt

HealthDay Reporter

FRIDAY, Aug. 29, 2014 (HealthDay News) -- Researchers have discovered that people with dyslexia have disrupted network connections in their brains.

Dyslexia -- the most commonly diagnosed learning disorder in the United States -- causes problems with reading and writing.

Previous research showed that brain activity is disrupted in people with dyslexia, but most of those studies focused only on a small number of brain regions.

This new study used functional MRI to analyze how multiple brain regions use networks to communicate with each other, something called functional connectivity.

The researchers scanned and compared the brains of children and adults with and without dyslexia, and found that the two groups had many differences in the connections between different brain regions.

People with dyslexia had less connectivity between a number of brain regions involved in reading, according to the study released online Aug. 28 in the journal Biological Psychiatry.

"As far as we know, this is one of the first studies of dyslexia to examine differences in functional connectivity across the whole brain, shedding light on the brain networks that crucially support the complex task of reading," study author Emily Finn, a neuroscience Ph.D. student at Yale University School of Medicine, said in a journal news release.

"Compared to typical readers, dyslexics had weaker connections between areas that process visual information and areas that control attention, suggesting that individuals with dyslexia are less able to focus on printed words," she explained.

Today on WebMD

nerve damage
Learn how this disease affects the nervous system.
senior woman with lost expression
Know the early warning signs.
 
Close up of eye
12 culprits that affect your ability to focus.
medical marijuana plant
What is it used for?
 
senior man
Article
brain research briefing
Article
 
Syringe
Article
Vaccine and needle
VIDEO
 
mans hands on laptop keyboard
Article
brain illustration stroke
Slideshow
 
most common stroke symptoms
Article
Parkinsons Disease Medications
Article