FIGURE 7.

Results of the k-means clustering results analysis for k = 3. (A) 3D scatter plot showing the position of the elements of each identified cluster (C1, C2, and C3). C1 (blue) contains eight RSNs: LVN, MVN, SMN, AN, RVAN, TPN, PN, and LN. C2 (green) contains four RSNs: DMN, SN, CBLN, and LVAN. The third cluster, C3 (magenta) groups three RSNs: WMN, FCN, and ECN. The axes of the 3D plot represent the three dimensions of the k-means input data: rc_Tstory, rc_Tpost1, rc_Tpost2. (B) Plot of the behavioral trends associated to the three clusters. Each trend has been obtained by averaging the rc_T values across scans of the RNSs belonging to the specific cluster. For each trend, the relative standard error has also been reported. C2 cluster has been associated to a “long-lasting” pattern of changes since the mean rc_T trend peaks in post1 after the listening task which occurs during story. On the contrary, C3 has been associated to a “short lasting” rc_T trend which peaks in story and recovers rapidly during post1, while C1 presents a mixed-trend between those of C2 and C3.