Density maps of undirected and directed links. The local degree of neutral or undirected connectivity is color-coded, such that high brightness signifies high degree. (A) Undirected links, small visual cue. (B) Undirected links, auditory cue. (C) Directed links, small visual cue. (D) Directed links, auditory cue. Observe the similarity between the undirected links maps for the two different tasks (A and B), while the directed links maps are remarkably different (C and D).
Cecchi et al. BMC Cell Biology 2007 8(Suppl 1):S5 doi:10.1186/1471-2121-8-S1-S5