Skip to main content
. 2017 Jun 3;140(7):2041–2050. doi: 10.1093/brain/awx116

Figure 1.

Figure 1

Alpha and gamma power. (A) Power spectra averaged over occipitoparietal electrodes for each group at each state. Shaded ribbons = standard error of the mean (SEM). (B) Alpha power magnitudes at left, middle and right posterior sites. Error bars = SEM. (C) Scalp topographical maps of alpha powers, with electrodes included in posterior (occipitoparietal) sites bolded and circled. (D) eLORETA localized the source of alpha activity to the bilateral cuneus/precuneus. (E) Power spectra averaged over frontal electrodes for each group at each state. Shaded ribbons = SEM. (F) Gamma power averages at left and right frontal sites. Error bars = SEM. (G) Scalp topographical maps of gamma powers, with frontal electrodes bolded and circled. (H) eLORETA localized the source of gamma activity to the bilateral prefrontal cortex, including superior frontal gyrus and dorsal anterior cingulate cortex. *P < 0.05; **P < 0.01. HC = healthy controls.