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Accelerated longitudinal cortical thinning in adolescence.

Dongming Zhou1, Catherine Lebel2, Sarah Treit3

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Adolescence shows accelerated brain cortical thinning, distinct from gradual changes in childhood and young adulthood. This developmental period may be critical for understanding cognitive and behavioral changes.

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AdolescentsBrain maturityChildrenCortical thicknessDevelopmentLongitudinalMRI

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Human Anatomy

Background:

  • Cortical development patterns across the lifespan are not fully understood.
  • Adolescence may represent a unique period of brain maturation.

Purpose of the Study:

  • To investigate age-related changes in cerebral cortical thickness.
  • To determine if cortical thinning accelerates during adolescence.

Main Methods:

  • Longitudinal study of 90 healthy individuals aged 5-32 years.
  • Acquired 180 brain scans with approximately 4-year intervals per participant.
  • Analyzed overall mean cortical thickness and lobar thickness changes.

Main Results:

  • Overall cortical thinning observed across the 5-32 year age range.
  • Accelerated cortical thinning rate identified during adolescence.
  • Slower thinning in childhood and decelerated thinning in young adulthood.
  • Similar accelerated thinning rates in adolescent males and females compared to young adults.

Conclusions:

  • Adolescence is characterized by an accelerated rate of cerebral cortical thinning.
  • This accelerated thinning contrasts with slower changes in childhood and young adulthood.
  • Further research is needed to understand the implications for cognition, behavior, and developmental disorders.