Impaired motor inhibition during perceptual inhibition in older, but not younger adults: a psychophysiological study.

Association between prefrontal neural activity and behavioural performance A regression model assessing the association between the extent to which stopping speed was impacted by perceptual inhibition behaviourally (Δ SSRT Incongruent − Δ SSRT Congruent flankers] and the extent to which prefrontal neural activity increased when it was loaded with both perceptual and motor inhibition tasks compared to neither [ΔHbO 2 congruent Fail − ΔHbO 2 Incongruent Success] did not reach statistical significance, F (2, 54) = 2.34, p = 0.106, R = 0.28. Δ SSRT [Incongruent − Congruent] did not account for significant variance in ΔHbO 2 , F (1, 54) = 1.80, p = 0.186; nor did age, F (1, 54) = 1.29, p = 0.261.

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