Table 2.

Average parameters of the model

Regiona (T)b (T)γ (T)β (T)
Global degreeLocal degreeGlobal degreeLocal degreeR-fMRI amplitude
Cerebellum8.7 ± 0.9 (9.9)19.0 ± 0.9 (21.7)0.30 ± 0.02 (17.3)0.26 ± 0.02 (15.3)7.3 ± 0.3 (22.2)15.8 ± 0.9 (18.0)
DMN12.3 ± 1.2 (10.8)19.4 ± 0.6 (32.5)0.25 ± 0.02 (14.5)0.29 ± 0.01 (27.0)8.0 ± 0.3 (31.5)17.8 ± 0.6 (31.2)
DAN12.8 ± 1.2 (10.7)19.2 ± 0.6 (33.5)0.25 ± 0.02 (14.6)0.32 ± 0.01 (30.0)8.9 ± 0.3 (35.9)18.4 ± 0.5 (36.0)
  • Parameters for the power scaling model, Q = a Db, that optimally fit CMRGlu (Q) and degree centrality (D), and for the linear model, Q = γ A+ β that optimally fit Q and the R-fMRI signal amplitude (A) in the default mode (DMN) and dorsal attention (DAN) networks, and in the cerebellum. The average and SEs of the parameters were computed across 54 subjects. T: t-score values (values in parentheses). Units of measures: [a], [β], and [γ] = μmol⋅100 g−1⋅min−1.