Using Partial Directed Coherence to Study Alpha-Band Effective Brain Networks during a Visuospatial Attention Task

Figure 3

Flow gain mappings averaged over all subjects in response to target (a) and nontarget (b). Group average effective connection patterns of target (c) and nontarget (d) condition. The arrows stand for information flow direction. For better illustration purpose, only the top 15% of the maximum edges are shown.

(a)

(b)

(c)

(d)