Cortical activations for symmetry effect on visual word form perception in developmental dyslexia.

ABSTRACT: The ability to generalize across symmetric views is an essential feature of the human visual system. Poor readers often make mirror errors and struggle to distinguish between symmetrical letters, such as "b" and "d". Unlearning the mirror generalization is therefore crucial for developing proficient reading skills. Here we investigated the effect of symmetry on visual word form perception in developmental dyslexic (DD) and chronological age (CA)-matched typical juveniles. We employed real-, non-, jiagu- (precursors of modern Hanzi), and scrambled characters in Hanzi with symmetric or asymmetric compositions as stimuli. In the behavioral experiment, both groups responded more accurately to the symmetric than the asymmetric compositions, namely the "symmetry effect". In a block-design functi

SUBMITTER: Hung SC 

PROVIDER: S-EPMC12623780 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature