Fig. 2

Associations between cortical thinning and motor, nonmotor and cognitive deficits in patients with iRBD. Significant vertex-wise correlation between cortical thinning and a Movement Disorders Society Unified Parkinson’s Disease Rating Scale (MDS-UPDRS) III motor scores; b University of Pennsylvania Smell Identification Test scores; c Rapid Eye Movement Behavior Disorder Sleepiness Questionnaire (RBDSQ) scores; d Immediate recall scores of the Hopkins Verbal Learning Test—Revised (HVLT-R); and e Benton Judgment of Line Orientation (BJLO) test visuospatial scores. The color scale bar shows the logarithmic scale of p values (−log₁₀). All results were adjusted for multiple comparisons (cluster-wise threshold p < 0.05 with Monte Carlo simulations) and corrected for age, sex (all correlations) in addition to education (correlations with cognition). Lh left hemisphere, Rh right hemisphere