Figure 5.

High-gamma frequency band analysis. Exemplary results for the motor control task (A), the listening task (B), and the visual perception task (C). For each tasks, z-score heatmaps (left) and HGA time courses (right) of exemplary subjects and channels are shown. Two high-gamma frequency bands are illustrated: 50–150 Hz (red dots/traces) and 70–300 Hz (blue dots/traces). HGA time courses are presented as z-scores (averaged across all trials) with applied lowpass filter (Butterworth order 6, cutoff frequency 10 Hz, applied bidirectionally) to improve visualization. Translucent horizontal bars in the time course plots indicate the mean z-score during task activity, corresponding to the respective value in the z-score heatmap. Note that the noise of the HGA time courses depends on the number of averaged trials (see also Table 1).