Figure 7.
Fractional anisotropy along optic radiation fibers grouped by length. In each subject, we grouped individual optic radiation fibers into five categories based on fiber length. The categories were the percentile of the fiber: (A) 0–20, (B) 20–40, (C) 40–60, (D) 60–80, and (E) 80–100 percentile from short to long. The separate panels compare the fractional anisotropy across groups in the five fiber-length categories. Other conventions are identical to those of Figures 5 and 6.