Figure 6. Causal interactions among selected ROIs.

Causal interactions among selected eight ROIs in conditions of smoking abstinence and smoking satiety: (A) causal relationship of smoking abstinence at FDR corrected p<0.001, (B) significant path weight matrix of causal interactions in smoking abstinence; (C) causal relationship of smoking satiety at FDR corrected p<0.001, (D) significant path weight matrix of causal interactions in smoking satiety; (E) matrix indicating the changed causal paths in the satiety vs. abstinence condition. In (A) and (C), the reciprocal causal flows were revealed using black color, and the nonreciprocal ones were in blue color. In (B) and (D), the insignificant path weights are indicated in zero.