Figure 6.

Correlated and anticorrelated gamma-band task networks. A, Spatial distribution of task-related gamma decreases (blue) and increases (red) during visual search, representing a task negative network and a task positive network, respectively. While TNN closely matches DMN and ventral attention network areas, TPN depicts concurrent activations in visual and dorsal attention network areas (data represent a snapshot of gamma power modulation at t = 640 ms as compared to baseline level). B, Anticorrelated gamma networks. These measure correlation among TPN-TNN by assessing correlation between single-trial data from all electrodes of TPN ROIs and TNN ROIs. C, Correlated gamma networks. These are the same as in B, but electrode pairs for the correlation analysis were always from the same type of network i.e., TPN-TPN and TNN-TNN correlations (TPN and TNN anatomical regions and electrode details are provided in Table 3).