Figure 4.

Laterality indices (LIs) for hemispheric asymmetry (A,B) and anterior-posterior asymmetry (C) of radial pathways (A,C) and tangential pathways (B). Radial pathways in the early age group revealed significant hemispheric asymmetry (p = 0.0045) (A). In contrast, significant hemispheric asymmetry was not observed in the tangential pathways (p > 0.01) (B). In the early age group, the posterior region was significantly larger than the anterior region (p < 0.0001, [1.75 × 10⁻⁵]) (C). In contrast, no significant difference was observed in the late age group (C). Diamond shape: early age group (17–22 GW); square: late age group (30–40 GW).