Changes in cortical thickness and sleep affect cognitive development in adolescence

Takeaway

  • Age-related improvements in non-verbal intelligence and speed of processing in adolescents are mediated by cortical thinning and reductions in sleep slow wave activity (SWA).

Why this matters ?

  • Compared with children, older adolescents have superior cognitive abilities, which are associated with maturation of synaptic density, cerebral metabolism, and sleep SWA.

  • This study extends on prior knowledge and aims to clarify whether these age-related changes in SWA and cerebral gray matter that occur in the older adolescent population mediate their cognitive development.