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BOLD signal extracted from brain regions showing a significant Time × CI interaction effect (Model2) in YA (A) and OA (B) adults. Throughout practice (DAY1 to DAY3), activity in motor and cerebellar regions decreased as a function of blocked practice, whereas after random practice, activity in these regions was either preserved (in YA) or increased (in OA). Clusterwise threshold Z > 2.3; p < 0.05. Error bars represent SE. CER, Cerebellum
