Table 1.
Early and late maturing white matter tracts.
| Early maturing tracts | Fiber Type | Connections | Maturation rate (FA/year)* |
Aging rate (FA/year)* |
|---|---|---|---|---|
| Cortico-Spinal (CS) | P | Cortical/Spinal Cord |
0.2·10−4 | 0.5·10−4 |
| External Capsule (EC) | A/P | Frontal/Temporal/ Occipital |
0.3·10−4 | −9.7·10−4 |
| Corona Radiata (CR) | P | Cortical/Subcortical | 2.5·10−4 | −12.0·10−4 |
| Internal Capsule (including thalamic radiation) (IC) |
P | Subcortical/Brainstem /Cortex |
4.7·10−4 | −6.5·10−4 |
| Late maturing tracts | ||||
| Corpus Callosum (Genu, Body and Splenium) |
C | Cerebral Hemispheres |
14.8·10−4 | −21.0·10−4 |
| Cingulum | A | Cingulate Gyrus/Hippocampus |
13.6·10−4 | −12.0·10−4 |
| Sagittal Stratum (SS) | A/P | Subcortical/Temporal /Occipital |
12.4·10−4 | −6.7·10−4 |
| Superior Longetudinal Fasiculus | A/P | Frontal/Temporal/ Occipital |
6.8·10−4 | −9.4·10−4 |
| Superior/Inferior Fronto-Occipital Fasciculi (FO) |
A | Frontal/Parietal/Occipital | 10.9·10−4 | −14.5·10−4 |
*
Rates of average rate of change were taken from (Kochunov et al., 2010b).
C=Commissural, P=Projection, A=Association;