highly significantp = 0.018
However, after controlling for individual differences in gray matter volume, age differences in neural distinctiveness remained highly significant in left primary motor cortex ( t (35) = 2.49, p = 0.018), supplementary motor area ( t (35) = 3.22, p = 0.0028), lateral cerebellum (left: t (35) = 3.56, p = 0.0011); right: t (35) = 3.80, p <0.001), and medial cerebellum ( t (35) = 2.81, p = 0.0081); the age difference in right primary motor cortex was no longer significant ( t (35) = 1.16, n.s. ).