Time frequency results of the Go/Nogo task. A Differences in the power change relative to the baseline between Nogo and Go trials at Cz, shown for the analysed frequencies (1 to 30 Hz) and separately for 50% (left side) and 72% go blocks (right side) and for the easy (upper half) and hard condition (lower half). The white square marks the analyzed time and frequency range for the nogo-related theta band increase with the respective topographic map. B Group differences in the time frequency data. Depicted is the power change relative to the baseline between Nogo and Go trials at Cz, separately for the two groups (4rep: upper part; 7rep: lower part) and 50% (left) vs. 72% go blocks (right side). The white squares indicate the analyzed time and frequency range for the beta and theta band, and shown are the topographies for the beta [scale -20 to 20% power change; collapsed across 50 and 72% blocks] and theta band changes [scale -40 to 40% power change] in the 4rep and 7rep group.