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Abstract #0645

Relating the structural and functional maturation of visual and auditory white matter pathways with diffusion imaging and event-related potentials in infants

Parvaneh Adibpour 1,2 , Ghislaine Dehaene-Lambertz 1,2 , and Jessica Dubois 1,2

1 Cognitive Neuroimaging Unit, INSERM, Gif-sur-Yvette, France, 2 NeuroSpin, CEA, Gif-sur-Yvette, France

White matter myelination is a long-lasting process occurring at different times and speeds depending on bundles and underlying networks. Since it both impacts DTI parameters and accelerates the neural transmissions between brain regions, we investigated whether transverse diffusivity measured in the tracts conducting the functional information would explain the conduction speeds measured with event-related potentials better than age. By considering the visual and auditory networks of 6- to 22-week old infants, we analyzed early lateralized responses in relation to projection bundles, and the inter-hemispheric transfer of responses in relation to corpus callosum fibers while taking into account the age effects.

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