Fig. 2: Bar graphs depicting the clinical variables, white matter fiber values, and cortical thickness features selected for the classification of freezing of gait converters and nonconverters according to the six feature combinations.

MDS-UPDRS Movement Disorders Society-Unified Parkinson’s Disease Rating Scale, FA fractional anisotropy, RD radial diffusion, MD mean diffusivity, l left, r right, G_temp_sup-Plan_polar G_temp_sup-Planum_polare, G_temp_sup-Plan_tempo G_temp_sup-Planum_tempolare, G_cingul-post-dorsal G_posterior-dorsal.