Figure 6.

(A) Comparison of β coefficients for brain state regulation between groups as a function of task instruction. β coefficients come from generalized linear models (GLMs) in which HDs (i.e., SVM model predictions) were regressed onto the task design matrix. A higher β coefficient indicates better brain state regulation (i.e., the participant increased or decreased the brain state following task instructions). (B) Scatter plot indicating a significant PTSD symptom severity (CAPS total score) × task instruction interaction on β coefficients among the PTSD participants. As can be seen, more severe PTSD symptoms were associated with better brain state regulation when the task instruction was consistent with avoidance (i.e., ignore trauma words), yet worse brain state regulation when the task instruction asked participants to attend to the trauma words.