3.3 Modulation of alpha power, VEPs and behavior over time on the task The overall pre-stimulus alpha power showed a trend to increase with time on the task during both standing and walking (Supporting information S2 ).
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Human visual processing during walking: Dissociable pre- and post-stimulus influences.
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Similar to the N1 component, no evidence for the dependence of the movement effect on any external stimulus-related manipulation (target location, distractor presence, and eccentricity) was found, as the interaction between movement state and target location ( F (1,24) = 2.40, p = 0.10), the interaction between movement state and distractor presence ( F (1,24) = 1.12, p = 0.30), and the interaction between movement state and eccentricity ( F (2,48) = 0.99, p = 0.37) all did not reach statistical significance.