Wider recognition in peripheral vision common to different subtypes of dyslexia

Wider recognition in peripheral vision common to different subtypes of dyslexia Italian children ( n =125) were classified into dyslexics, poor readers and ordinary readers. The dyslexics were further classified into the Boder and Bakker subtypes. The children were tested with the form-resolving field (FRF), which measures central and peripheral visual recognition. Dyslexics show higher correct identification of letters in the periphery, supporting the notion of a different distribution of lateral masking. A numerical characterization of individual FRFs––C2R––reliably distinguishes between dyslexics and ordinary readers. The wider distribution of recognition, similar across the various subtypes of dyslexia, suggests a general characteristic of visual perception, and possibly a different visual-attentional mode. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Vision Research Elsevier

Wider recognition in peripheral vision common to different subtypes of dyslexia

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Publisher
Elsevier
Copyright
Copyright © 2004 Elsevier Ltd
ISSN
0042-6989
eISSN
1878-5646
DOI
10.1016/j.visres.2004.05.001
Publisher site
See Article on Publisher Site

Abstract

Italian children ( n =125) were classified into dyslexics, poor readers and ordinary readers. The dyslexics were further classified into the Boder and Bakker subtypes. The children were tested with the form-resolving field (FRF), which measures central and peripheral visual recognition. Dyslexics show higher correct identification of letters in the periphery, supporting the notion of a different distribution of lateral masking. A numerical characterization of individual FRFs––C2R––reliably distinguishes between dyslexics and ordinary readers. The wider distribution of recognition, similar across the various subtypes of dyslexia, suggests a general characteristic of visual perception, and possibly a different visual-attentional mode.

Journal

Vision ResearchElsevier

Published: Sep 1, 2004

References

  • Developmental dyslexia: A diagnostic approach based on three atypical reading patterns
    Boder, E.
  • The relationship between language-processing and visual-processing deficits in developmental dyslexia
    Cestnick, L.; Coltheart, M.
  • Visual search performance in dyslexia
    Iles, J.; Walsh, V.; Richardson, A.
  • Spatio-temporal contrast sensitivity, coherent motion, and visible persistence in developmental dyslexia
    Slaghuis, W.L.; Ryan, J.F.
  • Transient visual attention is dominated by the magnocellular stream
    Steinman, B.A.; Steinman, S.B.; Lehmkuhle, S.
  • Can contrast sensitivity functions in dyslexia be explained by inattention rather than by a magnocellular deficit?
    Stuart, G.W.; McAnally, K.I.; Castles, A.
  • Contrast sensitivity in subgroups of developmental dyslexia
    Williams, M.J.; Stuart, G.W.; Castles, A.; McAnally, K.I.

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