Fig. 5.

Support vector machine classification results for the comparison and discrimination between logopenic variant PPA and semantic variant PPA. Top left: VBM results for the comparison between logopenic variant PPA (lvPPA) and semantic variant PPA (svPPA) (svPPA < lvPPA family-wise error corrected p < 0.05). Bottom left: Regions of interest (ROIs) based on independent meta-analyses. Right: Results of support vector machine (SVM) classification. Top: Regions most relevant for classification as lvPPA in yellow, svPPA in light green. Note that the scale of the distance weights has no applicable units. Bottom: Sensitivity, specificity, and accuracy for the ROI approach and the whole brain approach in SVM classification.