Neural correlates of morphological processing and its development from pre-school to the first grade in children with and without familial risk for dyslexia

Previous studies have shown that the development of morphological awareness and reading skills are interlinked. However, most focused on phonological as a risk factor for dyslexia, although there is considerable diversity in underlying causes this difficulty. Specifically, relationship between phonology, derivational morphology, dyslexia Finnish language remains unclear. In present study, we used magnetoencephalography (MEG) to measure brain responses correctly incorrectly derived nouns 34 first grade children (21 typically developing 13 with familial dyslexia). addition, compared longitudinally information processing 27 (16 11 at-risk dyslexia) at pre-school age then age. The task consisted 108 pairs sentences, including verb its root suffix/-jA/. Correctly forms were presented both real words pseudowords. contained morpho-phonological violation last vowel noun before suffix. activation response showed sensitivity morphologically correct vs. incorrect contrast only cases words. Children no significant differences groups emerged either or separately. Interestingly, our previous cluster-based permutation tests developmental behavioral first-grade Our results indicate important role morphology early phases learning read.