Nigrostriatal tract

FA

0.430 ± 0.022^a

0.408 ± 0.025

0.00068^b

MD^c

0.741 ± 0.073

0.771 ± 0.052

0.070

Corticospinal tract

FA

0.709 ± 0.029

0.722 ± 0.028

0.082

MD

0.730 ± 0.031

0.745 ± 0.027

0.043