Myelination scoring system of Parazzini et al*
| Frontal Lobe | Temporal Lobe | Parietal Lobe | Peritrigonal Area | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade | Prerolandic | Polar | Convolution I-II | Lateral | Polar | Postrolandic | Gyri | Posterior | Superior |
| 0 | − | − | − | − | − | − | − | − | − |
| 1 | + | − | − | + | − | + | − | + | − |
| 2 | + | + | − | + | + | + | + | + | + |
| 3 | + | + | + | ||||||
* The scoring system is binary (0, not myelinated; 1, myelinated).