Figure 4
From: Synapse loss and progress of Alzheimer’s disease -A network model
(a) Number of paths of maximum-efficiency (or minimum-weight) at the initial stages of connections in the network. In the initial stage, the network has ≈107 directed paths with efficiency in the range 0.2–0.3. (b) Final stages of decay after 120 days. With the progressive loss of links, the total number of paths as well as the average efficiency of individual paths decreases.
