Participants consisted of outpatients with a current diagnosis of PTSD (N = 25) or GAD (N = 24), and HCs (N = 20) with no current or past-year diagnoses. Participants were matched for age and gender across groups. Participants were recruited through community advertisement as part of a larger randomized controlled trial and compensated monetarily for their participation in the study. Inclusion criteria were primary diagnoses of PTSD or GAD, respectively, or no current or past-year psychiatric disorders for the HC group. Participants with co-morbid diagnoses of PTSD and GAD were excluded. Participants were further excluded based on the following criteria: history of suspected severe TB1 (i.e., exceeding 30 min of loss of consciousness because of a head or neck injury), history of neurologic disorders, and diagnosis of psychotic disorders, severe substance use disorder, or abuse of opioids, stimulants, or cocaine. Six PTSD participants met diagnostic criteria for mild alcohol use disorder (n = 3) or mild cannabis use disorder (n = 3); 32% of controls (GAD n = 7, HC n = 7) had a history of a DSM-5
