Dyslexia
Begins Early
Dyslexic brains are wired
differently. Researchers now report finding evidence of these differences in
infants as young as six months. In a study conducted at Boston Children’s hospital, researchers used DTI
(diffusion tensor) imaging to map the development of brain tracts in infants
between the ages of six and seventeen months. They compared the brain images of
a group of infants with a family history of dyslexia (FHD) with a matched group
of similar infants with no such history of dyslexia.
The researchers found significant differences in the
development of white matter in the left hemisphere among the infants in the FHD
group, similar to the structural differences seen among older dyslexic children
and adults in other studies. The researchers also found that the
differences in left-brain white matter density could be correlated with
development of expressive language skills .
This research provides further evidence that the
brain differences associated with dyslexia begin very early in life, and are
already established by the time the child begins to learn language. The
findings are consistent with the Davis theory that dyslexic children are
picture-thinkers who experience difficulty learning to think with the sounds of
language.
Citation: Nicolas Langer, Barbara Peysakhovich, Jennifer Zuk,
Marie Drottar, Danielle D. Sliva, Sara Smith, Bryce L. C. Becker, P. Ellen
Grant, and Nadine Gaab. White
Matter Alterations in Infants at Risk for Developmental Dyslexia Cerebral Cortex (first
published online December 7, 2015 ) (See Abstract)
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