Age-related alterations in alpha and beta oscillations support preservation of semantic processing in healthy aging.

ABSTRACT: Semantic processing remains relatively preserved during healthy aging, but the mechanisms are poorly understood. Herein, we use dynamic functional mapping based on magnetoencephalography to examine the neural oscillations serving semantic processing across the adult lifespan (N = 154; 21-87 years). Task-related oscillatory dynamics were imaged using a beamformer and whole-brain linear mixed-effects (LME) models were calculated with age and task condition (semantically-related or -unrelated) as factors. LMEs revealed significant age-by-condition interactions on alpha and beta activity in multiple regions, which generally reflected stronger responses with increasing age and/or in the semantically-related condition across regions (p values < 0.005, corrected). Follow-up mediation analyses of

SUBMITTER: Hall MC 

PROVIDER: S-EPMC12328654 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature