Fig. 4.

The relationship between GA at birth and apparent fibre density (FD), corrected for PMA at scan. Fixels with a significant positive correlation (corrected p < 0.05) are shown on the top row, and streamlines passing through significant fixels (coloured by direction red: left-right; green: anterior-posterior; blue: inferior-superior) are shown on the bottom row, in the axial plane. The scatter plot shows the partial correlation between GA and FD averaged over all significant fixels, corrected for PMA. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)