Figure 1

Orderly or chaotic functional connectivity within syntax-related networks. a Normal functional connectivity within syntax-related networks. A partial correlation matrix and mean Z values within/between the three networks are shown for the Normal group, together with a schematic of the three syntax-related networks (I, II, and III) in the right panel. In the partial correlation matrix, region pairs of “within networks” surrounded by red, green, and blue boxes correspond to Networks I, II, and III, respectively, whereas region pairs of “between networks” are surrounded by a black box for each network pair. All diagonal elements were shown in black. The r values reported in the previous study (Kinno et al. 2014) were here converted to Z values by using the Fisher r-to-Z transformation. Error bars in the bar graphs indicate the SEM for the multiple region pairs. In the schematic, the brain regions of Networks I, II, and III are shown in red, green, and blue, respectively. b–d A partial correlation matrix and mean Z values within/between the three networks in the LPMC (b), F3 (c), and Other (d) groups (novel results in the present study). Each of the three white asterisks in the matrix (d) indicates a higher level of functional connectivity significantly different from the abnormal connectivity (P < 0.05). These three connections are also denoted by curved lines and white asterisks in the schematic (a). In the matrix (d), a network pair of Networks III & I surrounded by a black box shows increased connectivity compared to the other network pairs. AG angular gyrus, F3O orbital part of the inferior frontal gyrus, F3op/F3t opercular/triangular parts of the inferior frontal gyrus, F3t triangular part of the inferior frontal gyrus, IPS intraparietal sulcus, L. left, LG lingual gyrus, LPMC lateral premotor cortex, n. nuclei, pMTG/ITG posterior middle/inferior temporal gyri, pre-SMA pre-supplementary motor area, pSTG/MTG posterior superior/middle temporal gyri, R. right.