The Evolving Cerebellar and Cerebello-cortical Functional Connectivity Architecture during Infancy
Sankalp Tikoo1, Carlos R Hernandez-Castillo2, Haitao Chen1,3
1Department of Biomedical Sciences and Imaging, Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, California 90048.
Summary
The cerebellum
Area of Science:
- Neuroscience
- Developmental Neuroscience
- Pediatric Neurology
Background:
- The cerebellum's role extends beyond motor control to higher-order functions like cognition and emotion.
- Infant development of the cerebellum's functional architecture is crucial but understudied.
- A research gap exists in understanding longitudinal cerebellar development in early life.
Purpose of the Study:
- To map the developmental trajectory of cerebellar functional connectivity in infants.
- To investigate both within-cerebellum and cerebello-cortical connections.
- To compare functional development between full-term and preterm infants.
Main Methods:
- Longitudinal study of 222 infants (155 full-term, 67 preterm) over the first two years of life.
- Analysis of functional connectivity within the cerebellum and between the cerebellum and cortex.
- Comparison of connectivity patterns between full-term and preterm infants.
Main Results:
- Neonatal cerebellum shows high internal synchronization, projecting primarily to sensorimotor and visual cortices.
- Within-cerebellum synchronization is stable from birth to 2 years; cerebello-cortical connections mature dynamically.
- Preterm infants exhibit reduced cerebello-cortical connectivity compared to full-term infants.
Conclusions:
- Cerebellar functional organization is stable internally but plastic in its cortical connections during early development.
- Dynamic maturation of cerebello-cortical pathways suggests early involvement in higher-order functions.
- Altered connectivity in preterm infants may impact long-term cognitive and socioemotional development.
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