highly significantP < 0.001
Spearman correlation showed for each hemisphere a strong positive and highly significant correlation (OFF levodopa: mean Fisher-transformed r-value 1.15 ± 0.0325, P < 0.001 for all hemispheres; ON levodopa: mean Fisher-transformed r-value 1.06 ± 0.0340, P < 0.001 for all hemispheres).