Cited by 993Reading and Literacy DevelopmentDevelopmental and Educational NeuropsychologyNeurobiology of Language and Bilingualism

Disruption of posterior brain systems for reading in children with developmental dyslexia

Shaywitz, Bennett A, Shaywitz, Sally E, Pugh, Kenneth R, Mencl, W.Einar, Fulbright, Robert K, Skudlarski, Pawel, Constable, R.Todd, Marchione, Karen E +3 more·2002·Biological Psychiatry

Abstract

Background Converging evidence indicates a functional disruption in the neural systems for reading in adults with dyslexia. We examined brain activation patterns in dyslexic and nonimpaired children during pseudoword and real-word reading tasks that required phonologic analysis (i.e., tapped the problems experienced by dyslexic children in sounding out words).Methods We used functional magnetic resonance imaging (fMRI) to study 144 right-handed children, 70 dyslexic readers, and 74 nonimpaired readers as they read pseudowords and real words.Results Children with dyslexia demonstrated a disruption in neural systems for reading involving posterior brain regions, including parietotemporal sites and sites in the occipitotemporal area. Reading skill was positively correlated with the magnitude of activation in the left occipitotemporal region. Activation in the left and right inferior frontal gyri was greater in older compared with younger dyslexic children.Conclusions These findings provide neurobiological evidence of an underlying disruption in the neural systems for reading in children with dyslexia and indicate that it is evident at a young age. The locus of the disruption places childhood dyslexia within the same neurobiological framework as dyslexia, and acquired alexia, occurring in adults.

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Crossref · 10.1016/s0006-3223(02)01365-3

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  • Activation levels of the VWFA and other nearby regions were positively correlated with standardized scores in grapheme-phoneme decoding ability, even when the effects of age were taken into account.

    “Activation levels of the VWFA and other nearby regions were positively correlated with standardized scores in grapheme-phoneme decoding ability, even when the effects of age were taken into account.”
  • Successful mastery of grapheme-phoneme conversion (i.e. decoding) is a critical precursor to the development of the adult-like response properties of the VWFA.

    “Such findings suggest that successful mastery of graphemephonemeconversion (i.e. decoding) is a critical precursor to the development of the adult-like response properties of the VWFA.”
  • The disrupted neural response is also evident in children with dyslexia.

    “This disruption, however, is also evident in children with dyslexia (12, 13), which suggests that it is fundamental to the disorder.”
  • This system's proper development matters for English and possibly more so for other writing systems.

    “The proper development of this system is surely relevant in English (Shaywitz et al., 2002), but it may be even more important in other writing systems (van der Mark et al., 2009; Share, 2008; Ziegler, 2006; Siok, Perfetti, Jin, & Tan, 2004; Holopainen, Ahonen, & Lyytinen, 2001; Paulesu et al., 2001).”

    From The Development of Cortical Sensitivity to Visual Word Forms (2011) · cites this paper as Shaywitz et al., 2002

  • It takes years for children to develop expert word recognition, and the emergence of this expertise correlates with the amount of activation of the VWFA by letter strings in normal and dyslexic children.

    “Finally, it should be remembered that it takes years for children to develop expert word recognition (Aghababian and Nazir, 2000), and that the emergence of this expertise correlates with the amount of activation of the VWFA by letter strings in normal and dyslexic children (McCandliss et al., 2003; Shaywitz et al., 2002; Temple, 2002).”

    From Specialization within the ventral stream: the case for the visual word form area (2004) · cites this paper as Shaywitz et al., 2002

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Authors
Shaywitz, B. A., Shaywitz, S. E., Pugh, K. R., Mencl, W. E., Fulbright, R. K., Skudlarski, P., Constable, R. T., Marchione, K. E., Fletcher, J. M., Lyon, G. R., & Gore, J. C.
Affiliations
  • Yale University (US)
  • Haskins Laboratories (US)
  • National Institutes of Health (US)
Corresponding author
Shaywitz, Bennett A
Venue
Biological Psychiatry
Publisher
Elsevier BV
Published
2002-07
Volume
52
Issue
2
Pages
101-110
ISSN
0006-3223 (ISSN-L)
OpenAlex
W2060985254
Cited by
993
References
55
Citations by year
2026: 21 · 2025: 22 · 2024: 15 · 2023: 25 · 2022: 31 · 2021: 43 · 2020: 42 · 2019: 38 · 2018: 37 · 2017: 35 · 2016: 47 · 2015: 43 · 2014: 36 · 2013: 53 · 2012: 60
FWCI
82.18
Type
journal article
Language
en
Open access
closed
Locations
  • Biological Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5p01hd021888-10)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (P01HD21888, P50HD025802)
Topics
  • Social Sciences › Psychology › Developmental and Educational Psychology › Reading and Literacy Development
  • Social Sciences › Psychology › Neuropsychology and Physiological Psychology › Developmental and Educational Neuropsychology
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neurobiology of Language and Bilingualism
Keywords
developmental dyslexia, reading, children, pseudoword reading, inferior frontal gyrus, reading skills, age differences
MeSH terms
Adolescent, Brain, Brain Mapping, Child, Dyslexia, Female, Humans, Magnetic Resonance Imaging, Male, Reading

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