Fig. 1.

(a) General multimodal MRI patterns of brain maturation, including indices of anatomy, myelination, and functional connectivity across the first 5 years of life. (b) Curated and condensed trajectories of white and gray matter volume, myelination, and mean cortical thickness showing the changing rate of development, with most developmental processes and changes occurring rapidly over the first 1000 days and the slowing throughout the remainder of childhood. (c) Networks of functional connectivity change associated with emerging fine motor, language, and visual processing skill.