The default network of the human brain is associated with perceived social isolation by Nathan Spreng, R, Dimas, E, Mwilambwe-Tshilobo, L, Dagher, A, Koellinger, P, Nave, G, Ong, A, Kernbach, JM, Wiecki, TV, Ge, T, Li, Y, Holmes, AJ, Yeo, BTT, Turner, GR, Dunbar, RIM, Bzdok, D