Figure 6. Phase coherence dynamics between the parietal and prefrontal cortices.

There was a significant increase in beta phase synchrony between the right parietal cortices and the left DLPFC from 0.075 to 0.175 s after movement onset during the complex (red line) compared to the simple (blue line) condition (p = 0.05, corrected). Specifically, phase coherence (i.e., PLV) in the two conditions was relatively equal throughout the trial, but there was a sharp, transient increase in phase coherence shortly after movement onset (i.e., 0.075 to 0.175 s) in the complex condition that did not occur in the simple condition. The phase-locking value (PLV) is shown on the y-axis, while time (in seconds) is shown on the x-axis. In both panels, the shaded area denotes time bins where the two conditions (i.e., complex and simple) significantly differed.