Spatial Directionality Found in Frontal-Parietal Attentional Networks

Figure 2

Magnitude squared coherence ((a) red arrows) has high coherence values (> 0.6) for the pairs marked by red arrows for the activity states, “Eyes Open + finger movement (EO)”, and “Eyes Wandering + finger movement (EW)”. Among all electrode combinations, the electrode pairs displayed above have the highest coherence values, while having small standard deviation. The highest coherence among the electrode pairs occurred between 8 and 12 Hz (alpha) and 12 and 16 Hz (beta) ranges. (b) Red arrows represent phase leads of the calculated mean of the unwrapped phases between channels.

(a)

(b)