Age-related reduction in motor adaptation: brain structural correlates and the role of explicit memory.

ABSTRACT: The adaption of movement to changes in the environment varies across life span. Recent evidence has linked motor adaptation and its reduction with age to differences in "explicit" learning processes. We examine differences in brain structure and cognition underlying motor adaptation in a population-based cohort (n = 322, aged 18-89 years) using a visuomotor learning task and structural magnetic resonance imaging. Reduced motor adaptation with age was associated with reduced volume in striatum, prefrontal, and sensorimotor cortical regions, but not cerebellum. Medial temporal lobe volume, including the hippocampus, became a stronger determinant of motor adaptation with age. Consistent with the role of the medial temporal lobes, declarative long-term memory showed a similar interaction, wher

SUBMITTER: Wolpe N 

PROVIDER: S-EPMC7181181 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature