Table 4.
Tract | Cluster Extent (%) | Loc. | Coord. MNI | βRD,GA (%/week) | βRD,SA (%/week) | ΔβRD (%) | MIRD | p(F)min |
---|---|---|---|---|---|---|---|---|
L Motor CT | 13 | PLIC | −25,−15,23 | −1.6 | −2.9 | −84 | −.54 | .02 |
L Par. Post. TC | 11 | PLIC | −25,−21,21 | −1.1 | −2.4 | −127 | −.68 | <.01 |
L Par. Post. CF | 10 | CP | −15,−22,−12 | −1.1 | −2.7 | −142 | −.68 | .01 |
L Premotor CT | 9 | PLIC | −22,−7,17 | −1.6 | −2.9 | −81 | −.53 | .02 |
R Par. Post. TC | 9 | PLIC | 24,−20,17 | −1.3 | −2.0 | −62 | −.45 | .05 |
R Motor CT | 9 | PLIC | 24,−15,17 | −1.0 | −2.0 | −102 | −.58 | .06 |
L Optic | 3 | ST | −29,−25,−2 | −1.2 | −2.3 | −89 | −.55 | .08 |
R Premotor CT | 3 | PLIC | 21,−6,15 | −1.0 | −2.1 | −104 | −.61 | .09 |
Four clusters were identified as having a significant (p<.05) increase in explained variance when splitting up post-conceptional age into gestational age and age at scan. Four additional clusters are listed at the trend level (p<.1). All metrics are averaged across clusters unless otherwise specified. Cluster extent is expressed in percentage of length relative to the tract. TC=Thalamocortical, CF=Corticofugal, CT=Corticothalamic, PLIC=Posterior Limb Internal Capsule, ST=Stria Terminalis, CP=Cerebral Peduncle.