Figure 7.

Region-of-interest analysis of the left IFG and pSTG. (A) Task-specific recruitment of the language networks left IFG and pSTG were examined with anatomically-defined ROIs. Across each ROI, averaged covariance values were extracted. (A) In the left IFG, neural synchrony was specifically higher during the CON task and close to zero for the other tasks and across tasks. (B) In the pSTG, the task effect was much weaker but ISC in general much higher. [a.u.], arbitrary unit; CON, task to attend to conventionality in co-speech gesture; ANY, task to attend to any hand movement; REL, task to attend to the gesture-speech relation. ^*p < 0.05; ^***p < 0.001.