Figure 3.
Longitudinal cognitive/motor decline in pre-HD. (a) Schematics of how PCA isolates effective directions of decorrelated change (PCs). (b) Projection of control and pre-HD slopes onto top 2 PCs of slopes (age/sex corrected) of performance from 10 tasks, showing differences along PC 1 (p = 2.2*10−6, two-sided Mann–Whitney U test). (c) Coefficients of the top 5 PCs, computed with slopes (healthy age/sex corrected) from pre-HD subjects only.