Brain connectivity in non-reading impaired children and children diagnosed with developmental dyslexia

Timothy N. Odegard, Emily A. Farris, Jeremiah Ring, Roderick McColl, Jeffrey Black

Research output: Contribution to journalArticle

95 Scopus citations

Abstract

Diffusion Tensor Imaging (DTI) was used to investigate the relationship between white matter and reading abilities in reading impaired and non-reading impaired children. Seventeen children (7 non-reading impaired, 10 reading impaired) participated in this study. DTI was performed with 2 mm isotropic resolution to cover the entire brain along 30 noncollinear directions. Voxelwise analyses were conducted on data processed through Tract Based Spatial Statistics (TBSS). The data replicated previous results seen across multiple studies and extended findings to include measures of both real word and pseudoword decoding. Negative correlations were observed in the left posterior corpus callosum between fractional anisotropy (FA) values and both measures of decoding. Positive correlations between FA values and real word and pseudoword decoding were observed in the left superior corona radiata. This extension of findings regarding correlations between the corona radiata and reading skills suggests an important direction for future research into the neurological substrates of reading.

Original languageEnglish (US)
Pages (from-to)1972-1977
Number of pages6
JournalNeuropsychologia
Volume47
Issue number8-9
DOIs
Publication statusPublished - Jul 2009

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Keywords

  • Development
  • Dyslexia
  • Language

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Cognitive Neuroscience
  • Experimental and Cognitive Psychology

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