Figure 1.

Global attributes of resting-state functional networks in normal control (NC), early mild cognitive impairment (EMCI), late mild cognitive impairment (LMCI), and Alzheimer's disease (AD) groups.

(A) The average shortest path length and clustering coefficient for the four groups under 11–30% of sparseness. The average shortest path gradually increased as cognitive deficits increased, while the average clustering coefficient gradually decreased.

(B) The shortest path length under different degrees of sparseness. As the sparseness increased, the shortest path gradually decreased with cognitive deficits.

(C) The clustering coefficient under different degrees of sparseness. As the sparseness increased, the clustering coefficient gradually increased with cognitive deficits.