Figure 5.

Content sensitivity and functional generality of the left IFG, pars triangularis, and right caudal SFS. Top: Proportion of experiments reporting significant activation in the left IFG, pars triangularis (L_IFGTria), and right caudal SFS (R_cSFS) grouped by content (left) and function (right). Significant difference by content were found in both the left IFG, pars triangularis (χ² = 6.42, P < 0.05) and right caudal SFS (χ² = 6.25, P < 0.05). Follow-up logistic regression tests revealed that verbal content predicted activation in the left IFG, pars triangularis (t₃₄ = 2.25, P < 0.05) while spatial content predicted activation in the right caudal SFS (t₃₄ = 2.10, P < 0.05). By contrast, neither region was sensitive to differences by function (both P > 0.1). Bottom: Renderings by content (left) and function (right). Results are thresholded at P < 0.01 uncorrected for depiction of overlap and subthreshold convergence. Content key: red—verbal, green—object, blue—spatial, overlap—mix. Function key: red—distractor resistance, sienna—intrusion resistance, green—shifting, blue—updating, overlap—mix.