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. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: Cogn Affect Behav Neurosci. 2016 Dec;16(6):1140–1149. doi: 10.3758/s13415-016-0459-7

Fig. 4.

Fig. 4

Significant group differences (p < .005, corrected) in alpha oscillations during the maintenance phase. Similar to Fig. 3, data representing veterans with PTSD before treatment compared to veterans without PTSD are shown on the top row, while the bottom row depicts comparison of the posttreatment veterans with PTSD to the veterans without PTSD. Note that data from the veterans without PTSD are the same in both panels, as these participants completed only one MEG session. In most time windows, veterans with PTSD had significantly weaker alpha activity (i.e., ERD responses) in right prefrontal and supramarginal areas before attention training treatment compared to veterans without PTSD (p < .005, corrected; top row). Following attention training, differences in most time bins were no longer present, and the posttreatment veterans generally showed no significant differences relative to those without PTSD (bottom row)