Figure 4.

Contrast in EEG reactivity in trials with small and large error. A, Constant perturbation. Group mean postmovement synchronization in α and β bands was suppressed in trials with large initial errors. B, Random perturbation. Only group mean postmovement synchronization in the β band was significantly suppressed by error. Reaction time, movement duration, and path length were controlled for between large and small error trials. Thick lines indicate mean normalized power. Surrounding thin dashed lines indicate SE. Vertical lines indicate the average timing of cue onset, movement onset, and movement termination, respectively. Purple dots represent significant differences between large and small error trials.