Preserved cerebellar functions despite structural degeneration in older adults.

Cerebellar-specific functions remain intact in older adults despite significant structural degeneration, even beyond age 80, highlighting remarkable functional resilience.

• Why it matters: Understanding how brain regions maintain function despite structural decline is crucial for developing interventions for age-related motor and cognitive impairments. This study addresses the gap in knowledge about the functional impact of cerebellar degeneration with age.
• What they did: Researchers assessed cerebellar motor and cognitive performance in 160 participants across three age groups using a comprehensive test battery of seven motor and one cognitive task, focusing on cerebellar-specific versus general sensorimotor functions.
• The result: Findings show that cerebellar-specific functions are preserved in older adults despite structural changes, whereas general sensorimotor abilities decline, suggesting the cerebellum's resilience supports sustained motor and cognitive performance in aging.