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Directed functional connectivity between the nodes of three resting-state networks. Directed functional connectivity between (A) 6 key nodes of CEN, (B) 6 key nodes of SN, (C) 6 key nodes of DMN for elderly group. (D) 6 key nodes of CEN, (E) 6 key nodes of SN, (F) 6 key nodes of DMN for young group.
