Fig. 7.

Motor assessment score plotted against age in subgroups with relatively intact caudate, damaged caudate, intact putamen, or damaged putamen. Groups were defined by structure volume ratio (non-dominant hemisphere structure/dominant hemisphere structure) such that a ratio greater than the mean (0.8) reflected a relatively intact structure, while a ratio less than the mean indicated damage to the structure in the non-dominant hemisphere. BBTA - box-and-blocks test of the affected hand, BBTU - box-and-blocks test of the unaffected hand, *p < 0.05, **p < 0.01, ***p < 0.001.