Fig. 2
From: Spinal cord involvement and cardiovascular autonomic dysfunction in Parkinson’s disease
Multivariate analysis. Individual (left) and variable (right) plots illustrate the two-component PLS-DA model based on 26 preselected FA, MD, MTR, and T1 relaxation variables across vertebral levels from C2 to T5. The individual plot shows fair separation among the groups of HCs, PDRBD(+), and PDRBD(−). Percentages on the axes represent the variance explained by each component. Colors in the variable plot correspond to variable types: FA (red), MD (blue), MTR (green), and T1 relaxation (purple). Abbreviations: HC, healthy controls; VH: ventral horns; IZ, intermediate zone; MTR, magnetization transfer ratio; PD; Parkinson’s disease; PDRBD(+), PD with RBD; PDRBD(−), PD without RBD ; RBD, Rapid-Eye Movement Sleep Behavior Disorder.
