Cerebellar gray matter volume changes across development: Posterolateral and vermal transient increases during...

Area of Science:

• Neuroscience
• Developmental Neuroscience
• Neuroimaging

Background:

• The cerebellum matures significantly throughout development, with distinct regional trajectories.
• Understanding these developmental changes is crucial for comprehending cognitive and emotional development during adolescence.

Purpose of the Study:

• To investigate age-related differences in cerebellar gray matter volume (GMV) across childhood, adolescence, and adulthood.
• To identify specific cerebellar regions exhibiting unique volumetric patterns during these developmental stages.

Main Methods:

• Voxel-based morphometry was employed to analyze cerebellar GMV.
• The ACAPULCO algorithm and SUIT toolbox were utilized for cerebellum-optimized analyses.
• 104 typically developing individuals (children, adolescents, adults) were included.

Main Results:

• Significant age-group differences in cerebellar GMV were observed.
• Adolescents exhibited higher GMV in certain regions (e.g., Crus II, lobule X) compared to children.
• Other regions (e.g., lobules I-IV, VI, Crus I, vermis VI, VIIb) showed higher GMV in adolescents than both children and adults, indicating a transient peak.

Conclusions:

• Cerebellar development is characterized by regionally specific patterns and differential maturation between and within lobules.
• Adolescence represents a critical period of transiently heightened cerebellar GMV.
• These findings have implications for understanding the development of cerebellar-supported cognitive and emotional functions during adolescence.