Fig. 4.

The relationship between the stress level and FNC according to groups (SD, NSD, and HC). a The FNC between C06 (CN) and C22 (SMN). The SD group showed a significant correlation between them, demonstrating that SD patients with higher stress level exhibited stronger connectivity between C06 and C22. b The FNC between C14 (mPFCN) and C16 (DAN). The SD group revealed a significant negative correlation between them. SD patients with higher stress level showed less connectivity between the C14 and C16. Red circles represent the SD group, blue represents the NSD group, and white represents the HC group