2017; Lees, Meredith, Kirkland, Bryant, & Squeglia, 2020). We found that in both sexes, APOEε4 was associated with lower baseline EEGc and increased slope of EEGc, though these effects varied by brain region in males and females. Moreover, there were strong links between EEGc patterns and symptoms of PTSD and AUD in females, but in males EEGc had more pronounced associations with AUD symptoms.