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Emergence of the neural network for reading in five-year-old beginning readers of different levels of pre-literacy abilities: An fMRI study
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Emergence of the neural network for reading in five-year-old beginning readers of different levels of pre-literacy abilities: An fMRI study
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Emergence of the neural network for reading in five-year-old beginning readers of different levels of pre-literacy abilities: An fMRI study
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Journal Article
Emergence of the neural network for reading in five-year-old beginning readers of different levels of pre-literacy abilities: An fMRI study
2011
Overview
The present study traced the emergence of the neural circuits for reading in five-year-old children of diverse pre-literacy ability. In the fall and winter of kindergarten, children performed a one-back task with letter versus false font stimuli during fMRI scanning. At the start of kindergarten, children with on-track pre-literacy skills (OT) recruited bilateral temporo-parietal regions for the letter > false font comparison. In contrast, children at-risk for reading difficulty (AR) showed no differential activation in this region. Following 3months of kindergarten and, for AR children, supplemental reading instruction, OT children showed left-lateralized activation in the temporo-parietal region, whereas AR children showed bilateral activation and recruitment of frontal regions including the anterior cingulate cortex. These data suggest that typical reading development is associated with initial recruitment and subsequent disengagement of right hemisphere homologous regions while atypical reading development may be associated with compensatory recruitment of frontal regions.
► The temporo-parietal region is recruited during letter processing in 5-year olds. ► The recruitment is bilateral at an early stage of pre-literacy development. ► The recruitment becomes left lateralized with gain in pre-literacy skills. ► The pattern of recruitment depends on the levels of pre-literacy skills. ► Right hemisphere engagement and disengagement may be typical of reading development.
Publisher
Elsevier Inc,Elsevier Limited
Subject
