FIG. 3.

Principal components (PCs), motion parameters, and framewise displacement for a representative low-motion subject (left) and very high-motion subject (right). From top to bottom: first six edge PCs, next 6 edge PCs, six edge PCs after doing 6mot regression, 6 parameters of motion, framewise displacement as calculated in the Power paper, framewise displacement as calculated using AFNI. The red line shows the threshold used in this study (0.25 mm). Color images available online at www.liebertpub.com/brain