Description 20th gw

Coming soon

Telencephalon

Surface of the cerebral hemispheres.


The primary  parietooccipital sulcus (sulcus parietooccipitalis) temporarily smoothes out at 18–20 gw, while calcarine sulcus persists. A notably wide subplate under the smoothed  parietooccipital sulcu was revealed (Godovalova et al., 2024

Ganglionic eminence (GE, eminentia ventricularis lateralis)



 
Fig.  3-D reconstruction of the ganglionic eminence at gestational week 20 (Proshchina et al., 2024).

Histogenesis of the subpallial structure

Neostriatum

Total volume of neostriatum
Volume of caudate nucleus
Volume of putamen