(A) Percent signal change compared to rest displayed on an inflated lateral surface of the left and right hemisphere, and on the superior aspects of the medial surfaces (insets). Maps show group-averaged data thresholded at 0.5%, superimposed for trained (red) and untrained (blue) sequences. Purple areas are activated for both. Figure 3—figure supplement 1 shows the maps separately. CS, central sulcus; PoCS, post central sulcus; SF, Superior frontal sulcus; CinS, cingulate sulcus; IPS, intraparietal sulcus. (B) Direct statistical contrast (t-values) of trained sequences against untrained sequences, thresholded at t(15) > 3.39, p<0.002. Red areas indicate higher values for trained, blue areas higher values for untrained sequences. (C) Group-averaged classification accuracy maps (threshold at 45% correct, Z = 2.57, p<0.005) indicate regions in which the four sequences are associated with significantly different local patterns of activity. (D) Direct statistical contrast for classification accuracy, displayed as in B.