New Dyslexia Model Finds 'Noise' at Root of Disorder

Recent studies by University of Southern California researchers suggest the reading problems associated with dyslexia are caused by problems filtering out external "noise."

These findings contradict the long-held theory that the learning disorder was due to sensory processing problems. Rather, researchers say, children with dyslexia have a harder time excluding irrelevant data as they form mental categories for word and letter sounds.

"It's harder to make a [language] task automatic when your categories are fuzzier than they ought to be to begin with," [the study's co-author Anne Sperling] said.

"In terms of treatment, the results suggest that programs that foster the development of sharper perceptual categories for letters and letter sounds might be a good way to supplement existing dyslexia interventions," she added.

Read more: New dyslexia theory blames 'noise'

ABSTRACT:
Motion-Perception Deficits and Reading Impairment: It's the Noise, Not the Motion