Cortical beta coherence provides a stronger non-invasive predictor of movement vigor than local beta power.

This tendency was confirmed by permutation tests, which showed a trend toward lower β iCoh in fronto-parietal parcels in Fast relative to Slow condition ( p = 0.079, difference from null distribution (z-score) = − 0.79).

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Although mean β power was overall lower in Fast than Slow conditions during the pre-go cue period in both groups of electrodes, the difference in β power between Fast and Slow conditions did not reach statistical significance in any time window for either group (Fig. 2 B).

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