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The Growing Little Brain: Cerebellar Functional Development from Cradle to School
Wenjiao Lyu1,2, Kim-Han Thung1,2, Khoi Minh Huynh1,2
1Department of Radiology, University of North Carolina, Chapel Hill, NC, USA.
Biorxiv : the Preprint Server for Biology
|October 17, 2024
Summary
The developing cerebellum shows hierarchical connections to the cerebrum from birth, with networks becoming more focused with age. This highlights the cerebellum's early role in cognitive development beyond motor functions.
Area of Science:
- Neuroscience
- Developmental Neuroscience
- Functional Neuroimaging
Background:
- The cerebellum's role in cognition is increasingly recognized, yet its early developmental trajectory and integration with the cerebrum are not well understood.
- Understanding early cerebellocortical development is crucial for comprehending typical brain maturation and identifying potential developmental disorders.
Purpose of the Study:
- To investigate the developmental trajectory of cerebellocortical functional connectivity from birth to 60 months.
- To map the hierarchical organization and dynamic changes in cerebellar networks during early childhood.
- To explore the cerebellum's role in higher-order cognitive functions from early development.
Main Methods:
- Utilized resting-state functional magnetic resonance imaging (fMRI) data from over 1,000 children (birth to 60 months).
- Applied advanced analytical techniques to map cerebellar topography and functional connectivity with fine temporal resolution.
- Analyzed network gradient dynamics and identified age-related shifts and stable network anchor points.
Main Results:
- Demonstrated a hierarchical organization of cerebellocortical functional connectivity present from infancy.
- Observed dynamic shifts in cerebellar network gradients, becoming more focal with age while retaining adult-like stable anchor points.
- Provided the first evidence of cerebellar connections to higher-order cognitive networks at birth, strengthening with age.
Conclusions:
- The cerebellum plays an integral role in cognitive processing from early infancy, extending beyond traditional sensory-motor functions.
- Cerebellar network development exhibits dynamic changes and stability, with observed functional asymmetries and sex-specific patterns.
- These findings offer critical insights into early brain development and provide a foundation for studying cerebellum-related neurodevelopmental disorders.
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