Figure 3.

Cue locked power in the posterior parietal cortex (PPC) and lateral premotor cortex (LPMC). Movement-related beta suppression was observed in both PPC and LPMC. This suppression was not cluster significant in the PPC in the EC condition. In the PPC, there were no significant power differences between externally cued (EC) and internally cued (IC) conditions. In the LPMC there was significantly greater beta suppression toward the end of the trial. Black contour indicates cluster significance. X-axis is time from cue. Y-axis is frequency. Color indicates group averaged z-power. Solid vertical line indicates action selection cue onset, first dotted vertical line indicates movement onset, reaction time (RT). Dashed vertical lines indicates maximal joystick displacement and movement end. Hz, hertz; Mov, movement; s, seconds.