Fig. 6: Geometric interpretation of predictive and reactive control as perpendicular forces.
From: Altered predictive control during memory suppression in PTSD
Left panel: circular projection of the resultant vector of predictive (i.e., belief) and reactive (i.e., PE+) control forces. 0° represents the optimum balance between these two orthogonal forces. The angle of the resultant force indicates imbalance toward either predictive (\({{{{{\rm{\theta }}}}}} \, > \, 0^\circ\)) or reactive (\({{{{{\rm{\theta }}}}}} \, < \, 0^\circ\)) control. The right panel shows the distribution of this imbalance index for each of the three groups. The empty circles represent the group circular average ± bootstrapped 95% CI for nonexposed (n sample size = 72), PTSD− (n sample size = 46) and PTSD+ (n sample size = 55).
