Fig. 4.

Significantly correlated WM clusters with gait velocity. Significant correlations (p ≤ .0125) between gait velocity and WMI as measured by different scalar DTI parameters (only correlations between reduced WMI and reduced gait performance, ie velocity, are shown). The different gait tests are color coded: yellow: single-task; green: dual-task counting; blue: dual-task naming animals; red: dual-task serial 7's. All voxel-wise results were acquired by nonparametric permutation inference testing controlling for age, sex, years of education, BMI and MMSE scores. Data is presented overlaid FMRIB58 1 mm space standard brain.