Neural dissociation of phonological and visual attention span disorders in developmental dyslexia: FMRI evidence from two case reports

► Two contrasted cases of young adults with developmental dyslexia. ► Dissociation between phonological and visual attention span disorders. ► Cerebral activations recorded under fMRI and compared to skilled readers. ► Evidence of a double dissociation at both the cognitive and neurobiological level. ► Heterogeneity of developmental dyslexia.