Brain Mechanisms Underlying Visuo-Orthographic Deficits in Children With Developmental Dyslexia.

ABSTRACT: Multiple hypotheses have been proposed to explain the reading difficulty caused by developmental dyslexia (DD). The current study examined visuo-orthographic processing in children with dyslexia to determine whether orthographic deficits are explainable based solely on visual deficits. To identify orthographic-specific, visual perception-specific, and overlapping deficits, we included two tasks (lexical and perceptual) in three Chinese subject groups: children with DD, age-matched controls (AC), and reading matched controls (RC) using functional magnetic resonance imaging (fMRI). We found that the left precuneus showed decreased activation across both tasks for the DD group compared to the two control groups, thus reflecting visual processing deficits in children with DD, which also affect

SUBMITTER: Cao F 

PROVIDER: S-EPMC6291466 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature