Figure 1. Extraction of brain networks from brain measurements and recordings. The basic workflow follows four main steps. (1) Definition of network nodes, either by parcellation of the brain volume into structurally or functionally coherent regions (left), or on the basis of placement of sensors and/or recording sites (right); (2) Definition of network edges, either by estimating structural connections from structural or diffusion imaging data (left), or by processing time series data into “functional edges” that express statistical dependencies (right); (3) Network construction, by aggregating nodes and edges into a connection matrix representing a structural (left) or functional network (right). The example plots are from previously published data56,95 (4) Network analysis. Reproduced from ref 162: Sporns 0. The human connectome: a complex network. Ann N Y Acad Sci. 2011 ; 1224: 109-125. Copyright (c) The Academy of Sciences 2011.
