Chunk #21 — 3. Results — 3.3. Top Significant Features Contributed to the Classification — 3.3.1. EEG Source Functional Connectivity of the Default Mode Network
gamma band (Figure 2, Panels A–E). The number of significant connections from each ROI node (in descending order) was as follows: R.PCC = 7; R.ACC = 6; L.PHG = 5; L.IPL = 5; R.IPL = 4; L.PCC = 3; R.PHG = 3; L.PFC = 2; R.PFC = 2; L.LTC = 2; R.LTC = 2; L.ACC = 1. The number of significant connections for the ROIs involving both hemispheres (in ascending order) was: PCC = 10; IPL = 9; PHG = 8; ACC = 7; PFC = 4; LTC = 4. Individuals from the memory group showed predominant hyperconnectivity between the hippocampal region (PHG) and other default mode network regions involving multiple frequencies, except for the beta band, compared with the Control group (Figure 2, Panel F). Only a single hippocampal connection (R.PHG–R.ACC) of the gamma band oscillation was hypoconnected in the memory group.
