Figure 3.

(A) Regions showing increased BOLD signal in healthy controls during imitate vs patients with frontotemporal dementia (FTD) during imitate or controls during view and regions showing greater BOLD signal in patients with FTD during imitate vs controls during imitate or patients during view. Whole-brain analyses were conducted at p < 0.001, corrected to family-wise error p < 0.05. (B) Example distributions of mean percent BOLD signal change (β weights) during imitate and view conditions in controls and patients across expressions in clusters identified in the group × condition interaction showing different activation patterns. Bars indicate where significant differences exist. IFG = inferior frontal gyrus; IPL = inferior parietal lobule; PMC = premotor cortex.