LD Blog

Anne Sperling and colleagues reported that children with dyslexia differ from their non-dyslexic peers when performing

We evaluated signal-noise discrimination in children with and without dyslexia, using magnocellular and parvocellular visual stimuli presented either with or without high noise. Dyslexic children had elevated contrast thresholds when stimuli of either type were presented in high noise, but performed as well as non-dyslexic children when either type was displayed without noise. Our findings suggest that deficits in noise exclusion, not magnocellular processing, contribute to the etiology of dyslexia.

Please don’t think that this story contridicts other stories about problems experienced by individuals with LD. Perceptual deficits as described here are not about reversals.

Link.