Figure 6.

Exploratory whole brain maps for task-comparisons. Exploratory t-maps (p_uncorr < 0.001; cluster threshold: 10 voxels) compared each pair between the three tasks, which resulted in six contrast maps. Of those, only the two contrasts “CON > ANY” (A) and “CON > REL” (B) revealed clusters above threshold. Both maps confirmed the specific contribution of the IFG to the conventionality task (CON). Additionally, compared to the REL task (gesture-speech relation), the CON task increased covariance in the mFG, bilateral MTG, right IFG and right cuneus. IFG PTr, Inferior frontal gyrus, pars triangularis; mFG, medial frontal gyrus; MTG, middle temporal gyrus.