Altered Effective Connectivity of the Numerical Brain in Children With Developmental Dyscalculia.

ABSTRACT: Numerical-order ability, a strong predictor of arithmetic, is often impaired in children with developmental dyscalculia (DD). While previous research has shown altered brain responses in number-processing regions in DD compared to typically developing children (TD), little is known about how these regions interact during number processing. This exploratory study examined the effective connectivity between six regions in the right parietal, frontal, and insular cortex as well as the vermis, using dynamic causal modeling (DCM). We investigated how number-order and number-identification tasks modulate connectivity within this network and the group differences related to DD. The number-order task led primarily to increased excitatory connectivity from the pre-supplementary motor area (preSMA)

SUBMITTER: Schwizer Ashkenazi S 

PROVIDER: S-EPMC12278192 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature