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ERIC Number: EJ1189664
Record Type: Journal
Publication Date: 2018-Sep
Pages: 10
Abstractor: As Provided
ISSN: EISSN-1467-7687
Early Development of Letter Specialization in Left Fusiform Is Associated with Better Word Reading and Smaller Fusiform Face Area
Centanni, Tracy M.; Norton, Elizabeth S.; Park, Anne; Beach, Sara D.; Halverson, Kelly; Ozernov-Palchik, Ola; Gaab, Nadine; Gabrieli, John D.E.
Developmental Science, v21 n5 e12658 Sep 2018
A functional region of left fusiform gyrus termed "the visual word form area" (VWFA) develops during reading acquisition to respond more strongly to printed words than to other visual stimuli. Here, we examined responses to letters among 5- and 6-year-old early kindergarten children (N = 48) with little or no school-based reading instruction who varied in their reading ability. We used functional magnetic resonance imaging (fMRI) to measure responses to individual letters, false fonts, and faces in left and right fusiform gyri. We then evaluated whether signal change and size (spatial extent) of letter-sensitive cortex (greater activation for letters versus faces) and letter-specific cortex (greater activation for letters versus false fonts) in these regions related to (a) standardized measures of word-reading ability and (b) signal change and size of face-sensitive cortex (fusiform face area or FFA; greater activation for faces versus letters). Greater letter specificity, but not letter sensitivity, in left fusiform gyrus correlated positively with word reading scores. Across children, in the left fusiform gyrus, greater size of letter-sensitive cortex correlated with lesser size of FFA. These findings are the first to suggest that in beginning readers, development of letter responsivity in left fusiform cortex is associated with both better reading ability and also a reduction of the size of left FFA that may result in right-hemisphere dominance for face perception.
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Publication Type: Journal Articles; Reports - Research
Education Level: Kindergarten
Audience: N/A
Language: English
Sponsor: Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) (NIH)
Authoring Institution: N/A
Grant or Contract Numbers: R01HD067312