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Coherence and phase lag between LFP and EEG. (A) Magnitude-squared coherence (MSC) during Shake (mean ± SEM, N = 12) is lower than that during Hold and Press in high beta (20–35 Hz). (B) The phase spectrum (mean ± SEM, N = 12) is negative in the high beta range (phase lag = −1.3 rad). Scalp EEG leads the LFP.
