The modalities address complementary aspects of maturation. Structural MRI characterizes brain anatomy, diffusion MRI measures white-matter organization, and functional MRI captures activity-related blood-oxygen-level changes. Examining these measurements together allows researchers to compare changes in tissue structure, connectivity, and function rather than relying on a single indicator of development.
They help distinguish developmental change from differences between individuals of different ages. Measurements collected across age groups or over longitudinal studies can reveal typical trajectories in brain structure, connectivity, and function. Researchers can then examine whether variation in these trajectories corresponds with differences in cognition, behavior, or developmental outcomes.
Functional MRI uses blood-oxygen-level changes as an activity-related measure, providing evidence about brain function during development. These measurements can be examined alongside structural and connectivity data to investigate how functional maturation relates to cognition and behavior. The resulting patterns support comparisons between typical development and atypical developmental trajectories.
Researchers compare quantitative measurements across ages or longitudinal time points and relate them to cognitive or behavioral information. Structural, white-matter, and activity-related measures can be evaluated as distinct but connected indicators of maturation. This approach helps identify developmental trajectories and assess whether observed neural patterns are associated with typical or atypical outcomes.
The approach can help identify atypical trajectories by comparing brain measurements with patterns observed during typical development. Researchers may examine differences in anatomy, white-matter organization, connectivity, or function and relate them to cognition and behavior. Such evidence supports investigations of how developmental disorders are associated with changes across multiple neural properties.
By tracking changes in brain structure, connectivity, and function across development, these studies provide quantitative evidence for brain maturation. In neuroscience, the measurements can be used to examine brain network formation and plasticity, including how experience relates to developmental change. Linking neural measures with cognition and behavior adds functional context to these processes.