Fig. 4
From: Inferring neural signalling directionality from undirected structural connectomes
Send-receive asymmetry of cortical subsystems under navigation (N = 360 at 15% connection density). a Projection of M = 7 distributed resting-state networks onto the cortical surface (top) and send-receive asymmetry matrix under navigation (bottom). A matrix element A(i, j) > 0 denotes that communication occurs more efficiently from i to j than from j to i. Send-receive asymmetry values that did not survive multiple comparison correction were suppressed and appear as white cells. For ease of visualization and without loss of information (since A(i, j) = −A(j, i)), negative values were omitted. b Resting-state networks ranked by propensity to send (top) or receive (bottom) information. Dashed vertical lines indicate a significant bias towards outgoing (orange) and incoming (blue) communication efficiency. c, d Same as a, b, but for M = 22 spatially contiguous cortical subsystems. Numbers listed next to module names identify corresponding rows and columns in the asymmetry matrix
