Fig. 2

Correlation of tongue force variability (TFV) and mean tongue force (TF) with fractional anisotropy (FA) in 28 patients with Multiple Sclerosis. Results were superimposed on a standard FA template. a Symmetric, negative correlations were found between TFV and FA in the posterior limb of the internal capsule expanding to the brain stem. b TF exhibited a positive correlation with FA in the right internal capsule only. Post-hoc analyses of individual FA values extracted from volumes of interest centered at the peak voxel of each cluster confirmed significant correlations of FA with TFV (a bottom panels) and TF (b bottom panel). ^aCoordinates are displayed in the Montreal Neurological Institute (MNI) standard space; the colored bar indicates the T-values; voxel threshold p < 0.005