FIG. 4.

Mean region-to-region PLV for (A) 0.1–1 Hz slow amHG oscillations, (B) delta (0–4 Hz), (C) theta (4–8 Hz), (D) alpha (8–12 Hz), (E) beta (12–18 Hz), (F) high gamma (70–200 Hz). Along the axes of the connectivity matrix, functional anatomical regions are ordered roughly anterior to posterior. Value in each box indicates number of pairs included in each comparison; comparisons with fewer than seven pairs were excluded. Gray indicates pairs of regions with no significant interactions. We observed an increase in dominant frequency with significant PLV along an anterior-to-posterior gradient, such that significant HG interactions (F) were found more in parietal regions, while amHG interactions were more prevalent in frontal regions (A). Color images available online at www.liebertpub.com/brain